1967 Barracuda Slant Six to 440?

my 69 dart has this swap.
it was an original 6cyl auto ps car...
it now has a 67 440, 727,disc brakes from a 73 duster, 8inch ford rear from a maverick.
(it bolts right in, it was super cheap at the pick a part, has the right bolt pattern,and i already had lots of parts for them from my dirt track cars)
i used the schumacher mounts and tti under chassis headers..i like the idea of a 1 7/8 primary ( or is it 2 inch??? i dont remember) to a 3 1/2 collector under chassis header,
but they are a pain in the a$$..
they drag all over the place especially on and off the trailer.. you cant get at the starter at all, there is not enough clearance on the flanges to clear head studs..and i cant get them to clear the steering linkage so it keeps rubbing enen though i shimmed the motor mounts up for clearance. and you need a mini starter. but my exhaust isnt hanging down the outside of the rails....