I recently put one of these https://www.amazon.com/Dorman-54002-Eng ... 652&sr=8-4 in my 77 SJ, it fits and works great. Nothin' fancy, cheap and it works. Had to bend over those two steel mounting arms to fit and tossed away the crappy hose that comes with it and replaced it with 3/8" rubber vacuum hose. Bought mine at Napa Auto for about the same price.