Looking for a slant builder/guru
I hate to go on the V8 bandwagon but there's pretty much 3 problems building a /6.
1st is 300 hp or so is maximum power 1 hp per cid would be a pretty hot /6.
2nd /6 heads needs work to make even 200 hp $$$$.
3rd is you still have an engine with no torque which is OK if you don't mind running deep gears. And by deep gears I mean deep gears to equal a 3.55/360 you need to be in the 5.'s:1.