Check with your local PD or FD. Many agencies have people trained in installing car seats. There is much, much more involved than you would realize. I went to the one day course and 3 of the officers under my supervision went to the three day course and it whipped their butts both mentally and physically. They learned how to put about any model seat into any model car. I can tell you one thing, if there is play it is not being done correctly and has significantly less safety value.

Buc ees is a long way from Huntsville but here is one of the programs:

http://www.hhwomenandchildren.org/car-seat-fitting