On a bit of a tangent, don't buy the repro coolant overflow reservoir they sell. I did, and the fit is poor, the cap area is poorly molded making it very difficult to put cap on, and when I tried to carefully adjust the hose coming off the cap, the nipple on the cap broke right off! I to re-use old cap. And putting the new hose on 39 year old cap nipple didn't even cause that one to break off.

Don't get me wrong, I think they are good people there, this product just isn't so good.