And other funny thing i just notice, one on my truck the inlet and outlet brake lines are 5/16" like the 518050 but i dont have the second bleeder near canister.... so im all screw up now.... how do you take the "cylinder diameter" measurements like this spec sheet gives cuz thats only info left on spec sheet that im not 100% on.... im leaning toward giving the 518050 a try and just take the extra bleeder as a bonus cuz everything else is a direct fit according to spec sheet measurements but the overall length is hard to measure cuz the 18.75" and 19" is hard to differ when you dont know exactly how to measure it... im just laying on my back in gravel with a tape measure eyeballing cuz its not a flat surface to measure length haha but i k ow for darn sure its not the 16" one so ill scratch that off....