I put a ZF-S6-650 (that's a 6-speed manual for those of you that don't know) in my Z71 Avalanche when I put the built 6.7L in. The shifter throw isn't too bad, but can be a little tricky if you're not used to it. My only problem now is trying to get the "D" on the dash to "N" so I can use "4LO". Looks like I'll be tearing into it again.