[JAM1775]

If you are spinning to 6300-6500 rpm the V-Jr. is best.
I ran the Weiand Stealth ( 1500-6500) and loved the pull from 3000-6000 rpm. But once I added more power to my 351W and began driving more highway trips I found it was better to swap the torque for the bit more HP kick from 5000-6200rpm. Cruising around town the high rise DP is more fun though ! BTW...I think your actual results may see a shift of 15-20 tq down low to a HP gain of 15 up top. I did not realize anymore than that. A 40HP gain is real high estimate unless you are spinning to 6800rpm ! If you have your actual engine dyno sheet you can make the decision based more on how you prefer to drive and which power band combo suits your taste.