[screamingchief]

crossmember heredual crossmember g-body
headers here IA g-body header
and for exhaust here pypes link
or here torque tech link
manifolds here manifold link
or from the sites sponsor performance years,and pypes has the downpipes that would be needed.
a budget option here exhaust wise budget exhaust
might need a little tweaking as its designed for sbc.
as is this dynomax sys
these are just a few of the options available sure there are more
I know it not all that cheap so I am going to add a few low dollar options,here:
with stock manifolds here stock down pipes
If you were to use the pypes down pipe to mate to one of the low dollar systems listed with the jegs crossmember I would think you could come up with a decent exhaust that should do reasonably well for not too much $$$$ I don't know what type of exhaust note you prefer fully but feel that the dynomax super turbo should be a pretty good compromise on price/perfomance basis.good luck and hopefully more folks will jump in on this.