I've run those. Just use the number 53006. The last time I replaced one though I bought #289-15038 from Jeg's for $55.99 ea. They are DynoMax/Walker cats. They claim to flow 26% better than OEM.
There is a company called thunderbolt that sells high flow metallic core cats. I have seen them for sale on ebay as well. They will last longer and generely flow better then a ceramic core. May want to look into that..They were also inexpensive and helped me pass emmisions with flying colors
Tom,
Make sure you get the shallowest resonator you can 4 x 9 instead of 5 x 8 if possible as ground clearance is a concern once you are lowered. I believe you lowered your car last year. right? Are the heads on yet?