i own an 88' trail boss 250 4x4 (same engine as trailblazer). i want performance pipe for it but not sure whcih would be best. i plan on putting slightly larger and more aggressive tires on it. i found two different pipes made by DG for that motor and some silencer options. i also found two pipes from another company. i cant find any specs on the dg pipes or reviews of any kind. here are some links-

dg 1

dg 2

dg 3

other company

 

Dont worry about a pipe just clutch the thing then go with a good air filter.If you must pipe it call Rick Ritter @RcR

 

i just found the rcr stage one kits for the trail blazer. I'm considering one of those now. i didn't even think of the clutching, thanks for the suggestion

 

Puta polaris white primary spring in the old girl and go for it.The spring is a stock primary spring for a 2000 400 scrambler