To Stroke, or not to Stroke

440/512 Stroker Kit: (4.250" stroke / 7.100" Rod) uses the hemi length rod and a 1.48" CH pistons that about 1/2" shorter then a stock 440 piston.
this one is based on the MoPar journals and is slightly better then the below stroker kit.
400/512 Stroker Kit: (4.250" stroke / 6.535" Rod) uses the BBC length rod and a 1.32" CH pistons thats just over 1/2" shorter then a stock 440 piston.
but like others said, its ultimatly up too you.