This was really a good question and caused me to look a little closer to what the heck I'm getting. I did say my business partner kinda took charge on this and its not how I generally do business. But here it is. $90 to tear that motor down to each individual components, $150 to bore and hone that 6 cylinder block, $125 to align and hone the main bearings, $125 to deck the v-6 cylinder block, $225 to balance assembly on Hines computerized balancer, $45 to polish the crank shaft, $72 to recondition the big end of rod, R&R piston $72, $70 to clean and magniflux cylinder heads, valve job $150, install hard exhaust seats $35, Install hard exhaust seats, $90, guide liners $36, install guide liners $102, surface cast iron heads $90, master engine parts kit $869, assemble long block $550, core with new heads $552, cam and lifter kit $469 and sales tax $152 Equals $3969 and there you go.