A long time ago... I took my 92 B&T to the Goodyear at FM3040 and Business 121 to have my AGXs installed. Don't recall the price, but it was around 250-ish.
Now, I'd do it myself... VatoZone has the spring compressor you can rent.
Hell, if you can grill some burgers & have some drinks we could probably have a tech day at your placehehehehe - unless you live in apartments. If that's the case, we could do it in my driveway if the weather cooperates. There are plenty of people with the know-how on replacing shocks.
RJ