*Realistic expectations..C-mon jump in!

I was planig on choosing the stall based on cam choice. I am hoping some one has gone to a roller set up using the manifolds. Anybody gone with the "Thumper or Mutha Thumper" roller? 107 deg LSA? Just over .500 lift @050?

my buddy Brian has the basic set up stock manifold 340 retro roller 71 dart 904 trans, and runs 13.8s don't now what cam but its a crane and it idles smooth and dont know the converter but he is a cheep *** so im sure its stock. with 391 sure grip.