Was it wrecked? I'm always leary of vehicles in the salvage yards with no signs of being wrecked. It's great for sheet metal parts and stuff that doesn't really wear out. But for the drivetrain, It tells me either it was in a flood and there might be water in the engine / transmission / t case, OR one of those items is bad and cost too much to replace it than what the vehicle was worth so the owner scraped it. So it's kind of a gamble.
The t4 is a slightly better version of the SR4 with the standard shift pattern with reverse in the more common location. To me, they feel a bit tighter too.
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
2003 Inca Gold TJ Rubicon