Super Jet cylinder size

I got a complete motor build coming for my 650 and im converting to a 701 with the 61x cylinder. Can some one measure with a set of calipers the bottom of a 61x cylinder and let me know the measurement so I can do the math and get my cases machined with a small amount of clearance before everything gets here.
 

SUPERJET-113

GASKETS FOR CHAMP BRAP!
I got a complete motor build coming for my 650 and im converting to a 701 with the 61x cylinder. Can some one measure with a set of calipers the bottom of a 61x cylinder and let me know the measurement so I can do the math and get my cases machined with a small amount of clearance before everything gets here.

87.87 - 88mm O.D. of sleeve bottom on 61X
 
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