Tri-County Gear in Pomona will be doing my rear locker and the front LSD. http://www.tricountygear.com. I have had an ongoing relationship with them over the years and they have always treated me right. Jason is the contact I am dealing with at Tri-County. They installed the Project X lockers. http://www.fourwheeler.com/projectbuild/129_0309_gear/

They charge about $1,000 for the locker itself (although this was off the top of his head) plus $250 labor, and then they charge by the hour for installation of the compressor and switches. Part of what will increase that hourly charge is figuring out where to install the compressor and the switches. They said if I can work that out ahead of time that it would save me quite a bit on the hourly charge. They estimate $1,600 for everything, but that would go down if I can do the work up on the compressor/switch mounting.

Off Road Unlimited in Burbank took over and did the mounting of the compressor and switches on Project X. I talked to them and they said hooking up the lines and fabricating the bracket to the bumper would cost time plus materials. They charge $80 an hour and it would take a full day. The worse case scenario for the compressor install is about $640.00. I am going to opt to have it all done at Tri-County. If anyone has some pics of an ARB compressor installed in a front bumper (preferably Calmini bumper) and especially the bracket, I would very much appreciate it. http://www.offroadunlimited.com.

I have a 10# CO2 tank and am considering using that for the locker (or getting an additional one since I share my air) and mounting it on the back of a Skid Row bumper. I need to do some more research on using the CO2 instead of an ARB compressor and how feasible it is having it mounted on the back bumper. I'm not totally convinced on this route though. I’ll edit this to include a pic of a CO2 tank mounted on the back of a Skid Row bumper. [Edit: I'm not sure whose rig this is so let me know if I need to delete this pic Skid Row Bumper with CO2 ]

For the front LSD, Tri-County would charge about $700 total but that was just an estimate until they look up the actual cost of the part. Although they have installed lockers on two other Xterras, they are not as familiar with installing the front LSD. I told him I would get him information on the install and he said that would be very helpful. Brent was kind enough to post step-by-step instructions with pictures so I will be able to provide him with that. http://mywebpages.comcast.net/xterra/tech/LSD/ They said if I could find a front LSD on my own they would only charge for the install.

I got Coolerman’s clutch interlock bypass switch and Tri-County has agreed to install it for me if I provide them with instructions. He said he would not know how much to charge until he sees it. BTW, Coolerman is really great to work with!

So for the rear locker and front LSD, it will cost about $2,300 unless I can do some of the work-up on my own. I think this is a fair quote, especially since I feel comfortable with the people doing the install. I will give them printouts from 4x4 parts of their costs for the locker and LSD so I won't be overcharged. http://www.4x4parts.com/public_html/shop/

Thoughts are welcome.