Wendell, welcome to the Stovebolt. The 47-53 are good years and a lot of parts are reproduced, not as good as most originals but they are available. LMC is just one of the vendors used. JimCarters and Classic Parts, Filling Station, Chevs of the 40's, The Truck Shop to name a few. Most carry the same overseas stuff and some pieces are made in Mexico and you'll even find a few pieces made in the USA and Canada. Most of us check out two or three vendors paying attention to the Service, Shipping, and Sales. And never forget to check the parts for sale, parts wanted and since your looking for a truck watch the Trucks for sale.
Once you get a truck its best to buy an assembly manual and a shop manual. All available from the vendors about 20-25 bucks a piece. There are some online manuals and you'll find the link to those if you go to the tech tips. Click on it at the top of the page.
Spend some time to get to know the Stovebolt, check out the tech tips, links, and the Gallery pictures...... and really important is to ask questions in the most appropriate garage forums. The Welcome Center is here just for guys to check who is new and welcome them to the Bolt.
Good luck. Keep us posted.