Now the link works. I personally havent used these guys. Have you compared their prices with the ECE or CPP? ECE has the best rep of all the aftermarket places for these trucks. Ive heard good and bad for CPP, personally Ive used them for lots of stuff with no problems.
Here are links to both sites...you will have to do the hunting for parts though =)
ECE ...
http://www.earlyclassic.com/
CPP ...
http://www.classicperform.com/