The gears are pretty much the same as a new T-5 -Z as far as ratios but are pretty week @ 265 ft.lbs... gears are 2.95 1st,194 2nd,134 3rd,1.00 4th and .63 overdrive
Using the T-5z and the tailhousing and shift rail from the AMC , you can make pretty much unbreakable trans as that one is rated at 330 ft.lb.
Pretty budget swap if you can DIY the bracket for the trans and a couple other things compared to the TKO 600 kits. I've done a few and even managed to adapt the AMC speedo setup using 'stock parts'
The standard adapter plate puts the shifter a little more to the right which gives you more 'knee' room but need to cut a little bit from the hole in the tunnel.