Y4 & ACL R1 tender

[nw-modeling-list at nwhs.org]

I have a kitbashed Y6b backwards to a Y4. it looks good, pretty accurate,
came with a Y6b tender. I found an R1 tender with the two 8-wheel trucks...
its huge compared to the Y6b tender it seems. Does anyone have prototype
dimensions on the R1 tenders that were used behind some of the Y4's?
It looks REALLY good I will say that but it sure looks big..

Bob Welsh