Are you new is this your 1st day? There is TONs of aftermarket parts company bashing here!You came to the wrong forum. First rule of aftermarket parts is you don’t talk smack about aftermarket parts.
you will be ok with a unit that has 4k miles....is it a stage 2 kit?wasn't trash talking in reference to the idiot who made that comment. im about to install my p1sc kit thhat has like 4k miles on it. was just wondering if i should replace seals and be ahead of game or install it run it and hope for best