not 100 percent sure but my guess would be a cruise control system, ABS, or SRS, you can rule out the cruise and air bags by general knowlege, as far as any other swaps i have a question, i have been told the differences for swaps are this- input shaft is 1/4" shorter/longer on MT's, gearing is different...? plus this, i have a 89 lx 5.0 HO T-5 car, the cable goes from the firewall down and there is a ball that hooks directly through bellhousing to the clutch fork, on my 91 lx 4 cyl it goes same up to bellhousing but then to a kind of pulley system, almost to pull the fork the other way...the bushings are SHOT so its metal on metal, not driving the car now due to the fact i need a new quadrant kit and cannot find this bushing kit!!! going to swap in a 302/347 this spring, how much difference is there in trannys?
