Custom building for the 6.0l v12 bmw 760?

You will have WAY too many issues with electronics if you modify this engine. The aluminum block will have to be sleeved for aftermarket pistons (custom made) Rods will be custom. Crank IS forged steel- but to stroke it will require welding and regrinding it- then the injection system with direct injection will not be able to supply the fuel you will need- you will most likely have to go back to a custom port injection system with a stand alone management system. Further issues will arise trying to mate the aftermarker management to the factory cluster, traction control, trans and brake system. Honestly- I gotta say- sell it and buy an easier car to mod. Any BMW pre 1996 can have a big block and lenco shoved into it quite easily. If you end up keeping the 760- remove the intakes and clean the valves- they carbon up pretty bad due to crankcase ventilation. Put an aftermarket catch can on the vent system, clean the valves and heads, port match and just drive it.