I was speaking for the 225, not the shorter stroke 'why bother' 170. Man.. even with a turbo them sons a bitches are SOFT...
See ... the 225 slant 'in stock form' is perfect...with thee exception of the exhaust manifold and induction....great motor... and the aluminum 225 was a great idea, I have one, but the open deck sucks and the liners separate at the tops from the die cast sleeves that capture them .....and then they leak at the head gasket cause of it.
Imho... if you really wanna help the slant, offer a new AL block that has a deck and then a cnc program for the existing head along with valves that gives 200 cfm by .500 lift...Last would be a solid roller...
Jmo