With all that money spent, might as well do a custom V8 B8444s with twins if you want to stay Volvo. Or an LSX single turbo, or huge blower. Both can make 800 without the headache, and would cost less. You're looking at 15k just for all the custom mounting and reinforcement alone. Then the headache starts of keeping both engines in tandem and synchronized. Why you have a map to kill torque is beyond me. I love torque. Makes me sh!t my pants.
What money spent?
You might be looking at 15k, I think I can get it done for about ?700 which includes the donor car and Another ECU
I have a map to kill torque so stop me blowing up my weak m59 gearbox.