I used 2 oil pumps one 164 and one 75.
I took the inside part from the 164 and put it in the 75 pump. but the rod length is a bit shorter. so I had to grind down the gear some to when I put on the lock nut there is a tiny bit of play(the gear can move up a tiny bit)
1987 black Milano Verde, 1987 (made in 1986)blue $200 gold with ABS
1972 White spider 2000 Veloce