You run an adapter to push the trans back to clear the "extended" flange on the crank, then run the A motor trans. I don't know how long of a stroke you could run in a 354 but I'm with Cab on the apprehension on running that much stroke. Gene Adams was developing a siamesed iron Chrysler block that could really take advantage of all the aftermarket parts with out so much risk of grenading a 50+yr old collectors item block but I haven't heard much about it lately.My car doesn't even begin to approach the level the level of massaging a FAST car has, But to me It's impressive of how well it runs with minor cleanup on 354 heads, lightwt pistons and rods,220/.480 cam and an alum copy of the oem single 4 intake.