On HPD's and AAEN's web site they have only 99 and newer listed for there Top End Pipes. I have a 98 Trailblazer 250, is there any diffrence in the exhaust design between a 98 and 99. I have looked on a parts diagram and the exhaust looks the same.

--Dave

 

whenever you go,both good choice,top end pipe only depend on race
ported motor,with that you'll have max power output anyways...
i'm pretty sure all engines are the same through the year with the 250