Which engine is Cooler?

Well.... not really YOU guys, I was for the Cobra, I'll be watching for the Viper install but even with 1,000 lbs Cummins motor the torque it could made to produce would offset the weight easily and make it very badass.

This is a mates Cobra that I helped build....it has a quad cam 5.4 V8, 5sp manual.....Jag rear suspension and Holden LH/LX Torana front suspension.
The rims are 3 piece items, 15" x 10" rears and 15" x 7.5" fronts, shod with 295/50R15 and 235/60R15.