408 stroker kits
I also bought a scat kit, cast crank with KB 356 Pistons. I measured everything, most was within specs - except one piston which was too small in diameter. Overall quality very nice in my opinion.
450 HP setup? 10:1 compression, RHS-X Heads or ported J-Heads i think, Performer rpm intake, 750 DP or 750 EDE Carb, comp XE295HL cam.
Here is one example, little bit more power:
http://www.carcraft.com/techarticles/ccrp_1006_small_block_mopar_stroker_dyno_test/index.html
Michael