Whats the factory thread size,

im thinking 3/4-16?

Hmmmm.........working the memory here. 20mm 1.5 on the older ones, don't know which year they changed but late 90's the thread size got bigger.

11/16"-18 is the stock tie rod ends size in both RH and LH

22mm LH is the drag link end size for 91+ (older years are smaller - 20mm LH)

ZJ V8 tie rod end is 22mm LH only with one end not replaceable and adjusted by adjusting sleeve similar to the drag link.

A upgrade keeping the stock taper would be to use 3/4"-16 TRE from Dodge (Parts store search 1990 Dodge Ram charger) part numbers ES2847R & ES2848L.