Thanks to all who replied. My intention is to run this engine in my 68 Barracuda coupe. I am not going to be racing this car but still want it to have impressive power/torque and decent street manners. I want to run stock exhaust manifolds because I already have them and a complete 2 1/2" TTI system. Also to avoid the fitting problems associated with headers and 4 speed cars (clutch linkage).

In my original post, I forgot to mention, the car is a 4 speed and with 391 SG gears.

Russ