Just a quick follow up, I have the same 1 1/4" bore master cylinder in my 2 ton and was able to order a new (probably made in China, but who knows) MC from Partsgeek.com for $59.00. I think with shipping and tax it was around $80.00. Ordered it on a Saturday and it showed up today (Thursday). Got it installed and it fixed the problem I had which was making me think I needed to rebuild my booster. Anyhow, their part number is 355-47216.
Bob
