i had the same set up as you but with a 370, 228 232 cam, and a 8rib set up, and a good tuner... it was cold that day also, so the IATs were down. my and some of the RPM boys went to lunch that day and when i got back there was a bottle on the floor, they had rig up a dry shot in 1hr..Lol just to see... and that is what we cam out with..

 

Heeeyyyyy, that blower looks familiar, lol. That bitch screamed on my HD with the 2.8" pulley.