Both cars were dynoed on the same mustang dyno. Which if you don't know, they dyno less than a typical dyno (dynojet)
My car has 336rwhp/330rwtq.
His Viper has 390rwhp/430rwtq.
I have an aftermarket cam, LS6 intake, 4000 converter and full exhaust. I have stock 2.73 gearing.
He has headers and headwork, and maybe some different gearing not sure what else.
My car weighs 3460.
His car weighs 3340.
Both were weighed on the same scale.
Obviously I am at somewhat of a disadvantage, but if I can hook up, I think I can make it closer.