do a plog, i pd $175 for a new coated one from zzp. heck yes u can tell the diff. a basic plog is 20$$ more than ported stock manifold..not worth it. at least a plog has better primaries and openings,,,the benefit is not popping a piston because the front bank is too hot(remember, heat sheilds and engine fire) get a plog 1 of the best mods under 200 bucks. then wrap the crossover and reweld and port the rear!!!! i'll wait till headers are more affordable for these cars...most say headers are needed mid11's and quicker........opinions are like assholes,,,everybody has one!
