Lookin good! Did you move the steering box out? Did you try test fitting a manifold in there yet?
truck manifolds wont work, they are to wide and pass side exits straight towards the rear crossmember. if you shaved head to manifold at a slight angle to roll the bottom towards the block and wernt using the rear crossmember and moved steering box you could use the truck ones.
Looks like the GTO or Camaro ones would work ok. but the block hugger headers give the most clearance and only $80 a set shipped is way cheaper
