How does a 360 408 stroker work?

i would buy Scat 4340 I beam rods and use those....no clearance problem..

Yep. When you consider that your old rods are, well, old :D and then you are also going to need new rod bolts, you might as well just pay a bit more and get some stronger new rods to begin with and save yourself from dealing with the clearance issue.