Their web site seems to list just about everything. All the fiddly bits like brackets and fixings as well as the more obvious parts.
I bought an ex-military recon gearbox off them via eBay a few months ago and I've just received another lot of stuff from them. All well priced and arrived in a few days.
Another nice thing about the web site is that they show all the options available.... like genuine, pattern, used, recon, etc. So you can directly compare the price. Nice touch.
www.lrseries.com