The biggest differences are in the head and the windage tray/oil pan design. I have a set of main caps I think you might be interested in. PM me for details. The focus crank works, the rods and all that work, unless you're trying to use FSVT rods and pistons as I think they have an SVT specific design. I think you could use FSVT rods and pistons togehter (with some machine work to lower CR would be needed on the Head and pistons) on a stock focus crank and have a pretty decent setup capable of 300HP easily.
