Exhaust Tips....Resonators?

Depending on what clearance you have you could try running some cheap bullet style glasspack mufflers in the straight part of the tailpipe next to the leaf springs. (I could tell you an interesting story about somebody doing this.) JC Whitney sells some in varying lengths & core diameters. You can get one as short as 12" with a 3" core.

http://www.jcwhitney.com/autoparts/.../Ntk-AllTextSearchGroup?Ntt=glasspack+muffler

Many years ago they listed something called the RACKETBUSTER. It was basically a short glasspack resonator with a fancy chromed tip.

:burnout: