We ran into a couple issues with my quarters, see my chassis is basically OEM everything lines up perfect but there is not a kit built that has the inner connection to the upper piece of the quarter, so I had to purchase the upper pieces and have them grafted to the kit quarter so there was some issues with the fit so I have purchased two OEM quarters, anyway picking my car up April 23rd and transporting to paint I will post pics as soon as I can get some new ones... I can certainly see why guys would build on a donor its just I wouldn't do it that way because of preference but it does make sense if you are working with limited budget and not as concerned about performance, I mean NO dis respect to anyones build at all but, if I was going to do another lambo build and money was tight I would 100% build on a donor but, honestly not sure if it very much cheaper once you start stretching and all that...We plan to do a complete build manual for a chassis like the one I have if anyone ever wants to have the plan and know what is involved..