Have you checked with Roger at Wasatch Models? I saw a note a week or two ago stating he has limited quantities remaining of his O Scale 41-N, 41-ND, 41-CUDO, 61-UDO and Pullman 6410 trucks.
Thank-you for the heads up. I have contacted Mr. Lewis and seen the Wasatch 41N trucks on eBay. I understand that they are 5' O-gauge and not Proto48 standard gauge. Now, my concern is their wheelbase: 8.5' vs. 9'. My understanding is that GSC made 41N trucks with both wheelbases. The drawings for the D&RGW equipment in the Pullman Standard Library show a 9' wheelbase, so I'm hoping the Wasatch 41N trucks have a 9' wheelbase. If the Wasatch 41N trucks have an 8.5' wheelbase, then I'll look for something else, such as the PSC 41-N-11 model. The 6% difference in the wheelbases is large enough to notice, so I want to get this right, especially considering what these trucks cost.