You'd probably be better off with the Holley Stealth Ram intake and a 52mm TB. The TPI runners will limit flow. The stealth ram intake is similar to the LT1 intake. Do some research and shop around. There are different models of stealth ram for the various engines so make sure you find the right one. They pop up on Ebay a lot. Here's a good article for you.
TPI Holley Stealth Ram
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