I don't think you'll find one because of the gain in popularity of hi-steer conversions, but if you don't plan on lifting the truck any more than 3" try downey or northwest off road. They deal in more old school stuff. Call them, their website's suck. They might have one. After them, I suggest high steer with an IFS box.
Good luck,
Mike
:note: I'm not suggesting buying anything lift or drivetrain related from them. I have done both, and regret it still. But for a steering box rebuild kit you should be okay.