If you're going to build it, If you want a really torquey all motor go b20 block with your b16 head, Good torque and power get a b18c1 block b16 head, If you want a high revving all motor go full b16. If you go boost i'd recommend a full gsr, The gsr combustion chambers make the b18c1 alot more prone to detonation on high horsepower cars as compared to the b16 head. You can take a LS crank and put it in a gsr to get a more torque'y GSR and still have a really strong bottom end that will rev high too, If you have cams that still make power over 9000 rpm i'd recommend a ATI super damper to take the vibrations out the crank and you won't shatter oil pumps (Not needed if the engine is balanced real well like it should be, But even with the engine balanced you will still have crank vibrations and the ATI super damper virtually takes out all the vibrations completely.) With forged internals you don't need oil squirters and so you can remove those for more oil pressure elsewhere. Decide whether you want to run E85 or pump gas, If you run E85 the motor can run alot cooler and you can run tighter piston ring gaps to have a stronger compression. Really you just have to decide what you want and go from there, If you got any questions just ask, Should be able to help with any questions on a b series motor, Building one right now for 600whp on E85.