I have gone through the archives and have got a mixed reaction on AFPR and porting the stock intake. I have already did a crappy job porting my plenum. Would I see any good gains off these two mods? I have more than enough time to do a good job porting. I have a dremel tool and cylinder and tapered bits of 80 and 120 grit, do I need anything else? How hard is it to take the whole intake off? I need to change the coolant and thermostat(160 to a 180) as well. If I get a AFPR it will be a holley. Give me your opinions all are appreciated. Mods in sig.

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1991 Z28 305 auto, homemade CAI, air foil, power pulleys, ported plenum, hypertech chip, hooker cat back, kyb shocks, PF brake pads, STB, SLP headers, 3" catco cat, spohn lca's, 4th gen 5 star wheels, 14.687@ 96.449 mph