408 stroker bottom end clearance questions

remember the magnum has a shorter deck height and you must adjust for that
pick a kit where you can get .030-.035 quench like 0.0 deck and adjust with gaskets
then piston dish to get compression you want with your choice of heads... best to have accurate head cc's
I'd pick a kit with chevy size crank pins and rod big ends
also check out 4 1/8 and 4 1/4 kits