Stop in for a cup of coffee

I bought a set of NOS 70's dougs headers for my car... i can't wait to see how they don't fit :) Annoying thing was i couldn't tell from the pic they have a 2.5" collector... which is fine for my 318... meh
Might be OK.
Is the multi-piece model for the early A? or a one or two piece for the later generation?