Well, it won't be so bad for me because this is what I do in my business. Eaton is supposed to have a retrofit kit for the E Locker in the not-TOO-distant future. I have to say that $5k sounds pretty steep. Should be around half that for an ELocker. The Detroits and Aussies that we do run around $1400 exchange (not counting your install cost, but they are pretty easy to put in.) ARB Air lockers run about $2k.
Scot Smith
1994 HMC4, Locked
"They're right, Wider IS Better..."
Southern Axle & SteeringRemanufactured Driveline & Steering Parts for Hummers