I made that one myself it’s got a really tight fit and they are definitely tight I’m gonna put a set screw in there also.Tighten the clamp bolts on the drag real good. Couple guys here have had them push a bit under a load
Psc says you need one .I just bought my hydro assist yesterday. I don't think I got the cooler. Is it necessary?
and the later years of our square bodys they installed a loop of hard line to the bottom of the radiator core support for even stock system stuff.Psc says you need one .