Hey TRAINMSTR, I have that engine and would be glad to take some measurements & photos for you as soon as I get a chance. Stay tuned...
UPDATE: Here are some photos and measurements...
And here are some measurements (in inches) taken with a digital caliper...
Overall length (end of cylinder tank to end of cylinder tank) = 1.055”
Diameter of cylinder tank = 0.345”
Height from tender deck to top of cylinder tank = 0.45”
Height from tender deck to top of “funnel” = 0.85”
Diameter at widest point near top of “funnel” = 0.31”
Hope this helps. Be sure to share photos of your finished project!