I installed their rear brake brake rotor kit on my '93. The kit came with very thorough step by step instructions. Glenn was easy to get a hold of and free to answer any questions you might have. My braking ability is well above what it was prior to the conversion. Since winter in Oregon is very wet they have preformed much better than the old drum set up. The only problem I had was with removal of the old brake lines. In the end I replaced all lines from the anti lock valve back to the calipers. I still need to by pass the anti lock valve. I also had to use a speedy sleeve on both sides due to normal wear. NAPA in Forest Grove OR had everything I needed such as brake lines and the speedy sleeves. If your truck has the 2&7/8 axle flange I've got the part numbers for the sleeves. Since you tow with your truck you might need an adjustable proportioning to change bias between front and rear when towing and non towing.
If I am not mistaken Glenn was one of the first if not the first to put together a kit. He was in CA at the time.
Bob