What is the size of the stock tailpipes? Will my stock tips fit on the Hooker catback?

 

Stock tailpipes are 2 1/4" diameter. Don't know for sure about the Hooker catback system, but MOST catbacks use 2 1/2" diameter tailpipes.

 

The stock tailpipes are 2.25" while most after market catbacks have 2.5" tailpipes. However any exhaust shop should be able to weld in reducers to us the stock talpipes on an aftermarket catback, that's what I had done with my old Flowmaster.