Damn... Well 1st, it sounds like you wont be having that problem. Later models did away with that screwy setup too, in favor of electronics. This may have something to do with your transmission or Trannie swap, I just don't have the answer for you.
Here's what we should do at this point, just to be sure you're safe... I already have one and will be looking at it throughly a bit later, go over to
Ford Cd's.com and get a copy of the
1992 Factory Service Manual (for free, you can go back later and make a donation if you wish), have a look at the setup.