If you are looking for a 2WD 5spd, find one from 84-87ish PUP if the truck you want to put it in is a 78 or newer LUV. The pup trans will have a cable clutch setup and save a lot of hassle. You could go up into the early 90s, but you have to look for the cable clutch, 87 to about 93 or so had either or.
The Impulse transmission is basically the same from 83 to 89, turbo or not. It looks to be the perfect match to a 76-77 LUV with hydro clutch, though to be honest I have not yet put mine (from an 88) into my 77 LUV. You do have to remove the remote shifter from the imp and put the LUV's shifter in, but that is just 4 bolts and not much effort.
For 4WD 5Spds, 86-87 gas powered Troopers and 4x4 PUPs/pickups with the cable clutch will go in about like the one dkay is doing. Check out that other thread at
http://forums.luvtruck.com/viewtopic.php?t=2207
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95 Isuzu Trooper Daily Driver
86 Isuzu Trooper reliable backup
77 LUV 2wd stock beltway blaster (resting)
79 4x4 LUV project: 2.6L, 5spd, 31s (eventually)
MEPR: Man, my 4x4 makes all other LUVs look good
