Has anyone purchased one of these. I'm looking at the part #289-15735 direct fit for 90-92 5.0. What are the size of the inlet and outlet.

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'91 Z28 305, Auto trans, K&N filters, power pulleys, ported plenum, hypertech chip, hooker cat back, kyb shocks, STB, 14.7@ 93 mph.

 

I have the universal 2 1/2" for my 91' 5.7L part #289-15183 from jegs. they work good, noticed it made the exhaust sound alittle deeper & louder,these are the shorter ones,14".nothing bad about them.