LMC is kinda like the JC Whitney of truck parts....some of their stuff is pretty good, while a lot of other stuff is barely usable, due to poor fit or just bad design. They specialize in supplying reproduction parts, so their stuff isn't what you want for a restoration project, but would be fine for a driver.
For an economy build, they're good for many items. For a quality rebuild, some of the other vendors' items might be a better choice.
Go to the
LINKS page and get catalogs from the first 7 vendors listed there, so you have an idea of what is offered and what the differences in prices are.