Rob, although the chassis plans are no longer available for purchase, there are a few other options for my Govedo chassis aimed for Aventador replica builds for purchase either from Finland or Bulgaria (both in Europe), as well as the option to directly order the chassis from USA at $10,000. Soon, I will start a separate topic dedicated to this matter.
1. "Rolling chassis package". A fully built and coated chassis complete with wheels, brakes and brake lines, suspension parts, rack&pinion, steering column and steering wheel, pedals, and fuel tank pre-installed. Components, such like: engine, transmission, seats, radiators and pipes, A/C, battery and electrical system are not included. Price is $20,000 + shipping from Bulgaria or Finland. Shipping requires a large crate box or cargo container.
2. "Bare chassis package". A fully built bare chassis (just like the above, but no paint, wheels, brakes or any additional OEM or donor parts) is $7500 + shipping from Bulgaria or Finland, or $10,000 from USA. Shipping requires a large crate box or cargo container. A temporary WD-40 protective coat is applied to allow convenient welding of any additional brackets to mount the necessary donor parts of your choice.
3. "Chassis starter package". An economy package consisting all the necessary separate pre-cut with CNC-laser machine: tubes, metal plates and sheets for the chassis, suspension and wheel hubs (uprights), as well as the CNC-bent roof tubes. All metal plates have dedicated mounting holes and pins for perfectly accurate assembly. The metal tubes, plates and sheets must be assembled and welded by the builder himself using the supplied instruction manual. Price is $5,500 + shipping from Bulgaria or Finland. All fit inside a small wooden crate box whose length is 2000 mm (or about 78"), width is 1000 mm (or about 39") and the height is greatly reduced.
*Mild steel is used as a primary material. If a more expensive metal type is requested for the chassis, such like stainless or chromoly tubes, that will affect the price according to the specified material cost.
**No matter the package, a 75% down payment is necessary up front, with the remaining 25% + shipping cost (unless the latter is arranged by the buyer) covered upon shipping of the crate box.
Keep in mind that my Govedo chassis is not super light, it's designed for high-performance (lots of HP and better tyre grip while high-speed cornering) and driver occupant safety. The roof roll-cage is properly built and use stiff CNC-bent round tubes with over 6 mm wall thickness. It's a far cry from the weak tubing that most replica Lambo chassis use. The same goes for the side protection and the whole structure as well. This adds up to the cost and weight, but I believe that a smart person would rather have safety over slightly cheaper and lighter car. The front suspension features variable camber angle and caster angle depending on the turn degree and direction. My chassis does use some premium components whose price is higher than what the usual kit car builder spends on his/her build. For example, the 36 rod ends by QA1 will cost about $920-960 alone, and brakes are 14" and 14.25" by Wilwood. The small diameter stock Corvette C5 brakes will not fit my wheel hubs, because the latter are designed for strength and use 19" front and 20" big rear wheels, hence the lower ball joints and upper rod ends of the wheel hubs are moved as close as possible to the rim's inside profile to provide better performance and less stress on all the components involved. 17-18" or smaller rims will not fit my suspension (but they also don't look right on an Aventador replica). Also, I recommend using stiffer spring in the front end (to prevent collision of the tyre with the upper side of the wheel well due to the limited space inside), and some stores sell them for slightly higher price than their softer counterparts.
If I can help with more information, please, let me know.
Bobi