I have a 1950 3100 which just had the one piece attached to the frame. Occasionally I would see the full assembly for sale on Ebay but the seller(s) were all asking for an amount that I wasn't ready to pay. Eventually, I started searching for people selling their truck frames and asking if they had the "slide out" under-the-bed spare tire carrier. Through Craigslist and other websites I was able to find one piece at a time and was able to piece together the right parts to assemble a 'period correct" tire carrier for my truck. Keep looking and be creative in your search!
