No they didn't get the big RA exh manifolds , just regular logs.
Most everyone upgrades them to RA exh manifolds when they get the chance.
They got the RA Induction System and RA Carburetor
The 455 HO package brought in good cylinder heads, 4bolt mains, and 12bolt rear.
Good stuff
With exhaust manifold swap or headers, its like a Ram3 with 55 extra cubic inches.
Was a smart buy back then, for the money. (in the D-port arena)