Which year body and style and the same on the motor and heads
I have ran the Hookers, Hedmans and the early two inch Pro Parts in both the early Darts(1967 and later) and Cuda as well as Dusters with both B and RB motors, the Pro Parts won't work well in a A body with a B motor and stock type heads, they hit the starter and oil pan plus I had to squeeze one or two tubes down some
Also which type motor mounts are you using
On my Duster with the Hooker two inch primarys it didn't matter which motor or heads I had on them, no problems on either type motor
On the Hedmans made for the Indy heads I had to raise up the low deck stroker motor with the Indy SR heads up to clear the inner fenderwells
Not so on the RB motors, I used elephant ears also so raising and lowering the motor was not a big deal in that car
I also bought a set of two inch Mad Dogs for a low deck and never used them, I put the stock A body exhaust manifolds back on my 383 H code 1969 dart GTS
