Mine started out quiet and very normal... but now, driving around in it is comparable to driving around in a dump truck. Loud. Though the main problem is that stupid donut gasket that seals the y-pipe to the manifold.
Here's a better suggestion... a guy I know that has built many, many small block Chevy's over the years says to not run gaskets on the manifolds... he says they all will leak at one point or another. Take the manifolds off, have the flange machined flat, and then bolt them on without gaskets.
Or just leave it alone and see what happens. It might not get any louder. Maybe it'll just fix itself.
1996 Ranger 3.0, 5 speed stick, 4x4, 3.73's, 31" BFG AT KO's
Wiring, it's all fun and games until you poke yer eye out with a soldering iron...