Longtime voyeur here at this forum as we have been looking for a new truck to us for the past 3-4 months

We recently acquired a '17 F350 CCSB 6.7 PS with the factory 3"+ rear blocks. As we will pull our 3 horse Sundowner trailer, I would like to replace the existing blocks with the 2" Superduty DRW) or even the F150 1.25".

Reaching out to see if anyone has the 2" blocks (#6C3Z-5598-A) for sale. I recognize I can get these elsewhere but thought I would check here first.

Thanks!