[Dodge64]

Hi,happend to get my hands on a pair of "NOS" Hooker mopar B/RB headers today and just wanted to ask if somebody know how to find out an old partnumber from Hooker headers, which body they fit?The partnumber are not possible to find at Hooker header site.
They are stamped L 5321 B ,they are 2" prim. all way and 3.5"collectors and they are adjustable with loose collectors.
They dont fit Dodge 64 with 383" very well after been trying today,the 2# pipe going against engine mount a lot and other side they are against steering column...
They are built for Mopar and B/RB engine .
E-body with RB maybe??

Thanks, Glenn.