If you go with the Sniper system, wouldn't you be able to use the stock distributor? IIRC, it's a hall effect distributor with no advance mechanism, and the Sniper should be able to enable spark control on that, since it would need to be locked out anyways...
If you go carb, I'd look for an '87 distributor out of a Dakota or full size truck, I BELIEVE those were pre-TBI, and still used a carb, although it was a mutant semi computer-controlled thing...
