OK gang I got all the parts and need some help.  I have new front and rear ARBs for my 97 Tracker. I have new 5.83 ring and pinion gears and all new bearings and seals for both diffs .  I have the Calmini Anvil and a front steel pinion carrier from a XL7.  I even have the stronger Calmini rear axles.  Now as you can imagine this has been quite an investment so I do not want to take chances on assembling it myself.  Where should I go to have an experience driveline specialist in my southeastern PA area assemble the diffs?   What should the assembly of the diffs cost?  Thanks in advance. 

Dave