I kept the six cylinder bars in my old pump gas Duster with a 400 stoker 517 C.I. motor, they work fine for me but I'm a old time drag racer that doesn't like getting beat at the track or the street.
It ran a best of 9.993 at 134.?? (CRS) MPH with the full 3.0 inch exhaust system on to the rear bumper with the air cleaner on weighing 3450 Lbs. with me in it on 10.x31x15 slicks on ten inch rims, it ran a bunch of 10.00 at 134.+ MPH on a set of M/T ET Street Radials on 12.0 inch rims also up
I am not a roundy round racer and I don't try to go around every corner faster than the other guys do shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)