exhaust system recommendations

[chilihed]

I have a 1970 LWB with a 350. It still has the stock manifolds, and is missing exhaust pipe from muffler back. I would like to find something not too expensive that would bolt right in without having clearance issues. If that means I keep the stock manifold then so be it, but I am not opposed to long tubes if they clear. I need the system to be dual exhaust and I don't care if it is rear or side exit. It can't hang too low since I just finished a 3/5" drop. Stainless, or aluminized, or coated any of the above, just don't want it to rust. I have access to a welder so a kit is not out of the question. I would just rather not spend a week piecing, cutting fitting the dang thing together. Would like to be able to complete in a day by myself.
Okay there ya have it. Any suggestions are welcomed.