I know that in order to run cross over steering on my '78 Trail Duster, I need to relocate the gear box, change the steering shaft and install a different steering arm on the passenger side steering knuckle. My question deals with the steering arm. Which is more practical or easier to do, a) get a flat-topped knuckle that's predrilled, b) remove the knucke and drill and tap it myself, c) remove knuckle then bring it somewhere to drill and tap, or d) leave the knuckle on the truck, and drill and tap it there? I'd like to do it on the truck, I just don't know if that's a good idea. Btw, the steering knuckles came off an '87 RC.