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Here is what we did at the shop. The shop already does P&P work on heads and S/C's so we figured.........why the hell not.
Final numbers after install and tune was 289rwhp and 304lbs rwtorque (ambient temp 89deg) not bad for an N/A automatic DD.
I did this to my Trans Am when i had it. it helped a small bit but not as much at the 62mm i just added.. But it was free and any FREE hp you can get is a good thing.