The exhaust is the least of your worries.
There is some wiring to be done. depending on if you want to keep it obd2 or witch i recommend converting to obd1. Here is a link with alot of good info. Anymore info you need jsut shoot me a PM.
http://technet.ff-squad.com/
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RIP Kevin Gonzales AKA Slo_Si 9/06
RIP Robert Kolp aka 00ek 4/07
RIP Pablo Garcia aka FatHead 9/07
_Jake D