RollBars

Will the factory rollcage out of a 92-95 wrangler fit in an 87 wrangler?

Killer question! Not sure, but you can doa quick approximation. Measure the distances between the bolt down points; both forward, sideways, and diagonally. Then check the relative height of the boltdown points/vertical bars, to see if that is the same. If they match, you're in business. If just a little off, might be tough duty to get it to fit.