need slant 4 barrel help 170 225

Thanks for the help guys!!!!!

So all /6 cranks are drilled for the pilot bushing
but are you saying the crank flange is a different bolt pattern???
so what would I have to do get a later 225 flywheel and new clutch pressure plate??? if I cant find an adapter
How can I tell the model year of my 170????

and if I have waggin build me duals will they work with my clifford intake on the 170????