I think I have an original stock for one of those in the old saved stock rack. Is the carbine for sale?
In decent shape, they are hard to find. Many of them were completely FTRed in the early sixties and rebarreled to 7.62 and chambered for the 7.62 CETME cartridge, which is dimensionally identical to the 7.62x51. Harkley and Haywood, SIR, Army Navy, Lever Arms and even a few pawn shops and gas stations used to sell them in fresh FTR condition for $50. Considering the wages at the time, that was a premium price for a milsurp. They didn't last long. Then, came the carbines that were chambered in 7x57. They didn' command such a high price because they varied in condition inside and out. The were also chambered in an unappreciated and hard come by cartridge. Even now, try to find a box of 7x57 hunting ammunition for sale in CT or even some gun shops.