400 HP possible?

I don't recommend the Wiesco/K-1 rod combo, unless you have had a lot of turbo experience. That rod and piston combo will give you over 10-1 CR with a 225 crank. The rod at 7.001 is the 198 length, which puts the piston up higher in the cyl.

Grump, if the turbo is properly sized for the engine, lag is mostly non existant. My old turbo slant, which is totally obsolete by todays standards, would get 2 lbs on the starting line, and 12 lbs at the tree. There are several slants making over 400 hp, one at over 600 in a street driver on pump gas.