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sorry for interjecting but unlees you plan on putting a cam heads intake headers you will loose 20-30 lbs of tq on the low end tour gas peddle will feel mushy. i have 2 90 zr1s with ported heads inj housings and plenum one has 21/2 flowmaster and the other b&b3in with xpipe the one with the 21/2 wins the drag race by 3 cars . we even went so far as to switch ex and what do you know the car with the 21/2 won by yhe same amnt. all depends on if you want to be fast or just sound fast. jmho
I was looking at the superexhaust.com website and it looks like the $923 exhaust is the 2.5" system.
You just have to tell them that they want to sell you it for $935
Here's how I did it - superexhaust offers to beat competitors prices, so I found the cheapest place that offers this product http://www.corvettesofhouston.com/pr...roducts_id=222, then asked SE to match the price. If I would have purchased the sys for C of H I would had to pay tax . So I ordered it from CA, skipped on the taxes, and got the best deal in the country.