ninefinger, I must apologize to you since I'm measuring a SpeedCo adapter and you were doing a Harbor Freight adapter. They are different - both in price and construction. So below are photos of what I measured on a SpeedCo adapter and also what I'm trying to build... Yes, the price to buy one of the adapters is WELL worth it...
Hindsight is 20/20... I drill the holes to 7/8"... which is what I measured but most toplinks are 5/8" or 3/4" (why didn't I think twice about that???) There is going to be slop in the linkage... but is this good or bad??? I decided I will try it out before I drill to 1" and put in a bushing.
What is more common on the toplink 5/8 or 3/4???.
.
Hindsight is 20/20... I drill the holes to 7/8"... which is what I measured but most toplinks are 5/8" or 3/4" (why didn't I think twice about that???) There is going to be slop in the linkage... but is this good or bad??? I decided I will try it out before I drill to 1" and put in a bushing.
What is more common on the toplink 5/8 or 3/4???.
.