I've bought a fair amount of parts from LMR for my '93 GT recently. Buy online and it's delivered 4-5 days later. AM is not Pep Boys for Mustangs, it's JC Whitney for Mustangs. They're a joke now. Once great. Now a footnote. I looked at them for some very basic Foxbody items, and their Foxbody parts selection is laughable. They used to have lots of stuff. It's pretty clear they are chasing the "it" car stick on parts market. They carry what I call "easy money" parts.
LMR is really good, but even their prices are sometimes not the best. Gotta do your research.