New setup- 340 based 416, 360 based 387, or 360 based 408?

W2s like rpm so the shorter stroke may be beneficial. And they like lots of duration and lift
7800 rpms is not uncommon . .
Solid roller is the way to go .
Get a custom grind from Jones or Bullet or research other successful combos. W2 facebook page will be a good resource .
A mild port job really wakes them up . If you have abilty get a set of Mopar templates . There is a guy that reproduces them out of thick plastic on W2/W5 Facebook page .