I currently have a popcharger, TS Headers, and Kinetix cats. I am getting alot of rasp from the cats so I am considering either some new cats (Helix, I think was recommended) or resonated test pipes (will this stop the rasp?). I also have the Motordyne spacer sitting at home. I also maybe having a Final Drive swap sometime in the next few months.

I have an auto so I am considering these for the next mods: (Street Racing)
High Torque Converter
Pulley
New Cats/Test Pipes

Any other ideas?

Thanks!