bought a mystery 850 double pumper...

Like I said.. I just bought it as a curiosity.
At the very least I got a set of 50cc pumps and other various parts.
I have another 850 DP and it seemed to work fine for a street motor.
My favorite though is a 600 DP the was modded by a buddy in the 80s... Seemed to make any engine run just a little better