There's probably no right or wrong answer here, just looking for some input. I'm swapping gear from my '91 jimmy into my new M1009 blazer, so here's what I'll be working with. -Truck will be used for trail use obviously, but will also need to be able to make the highway driving to the trail, figure about 250-300 miles each way. No real DD duties for now, but with the way I break things, its a good possibility it may need to serve this purpose. /forums/images/graemlins/smirk.gif -Axles are 3/4 ton with 4:10 gears -Will be using 31" tires for the drive to the trails -Motor will be 383 w/ TBI, and hopefully Vortec heads by then too So, for what I need should I... 1. Rebuild the Th400 from the M1009, and use with the NP208 or 2. Use my fairly new 4l60 (only about 15,000 miles old) w/ NP241 behind the motor Only drawback I see to option #1 is losing the lowrange of option #2 drivetrain. Also would lose overdrive for the highway driving. But is the Th400 that much stronger I should rebuild and use it instead? I have no experience with the NP208 either on strength, so need input there too. Basically I have an entire running '91 w/ 3/4 ton drivetrain that can swap to the M1009 that needs motor and tranny rebuild. Any ideas/thoughts are greatly appreciated!!