Hi articXS.
The speedo drive is 1.240" long (31.496mm) and the OD on the outboard end is 1.160" wide (29.464mm).
The right side spacer is .788" long (20.015mm) and the outboard OD is again 1.160 (29.464mm).
The dimensions are all the same as the stock pieces, except, I didn't like the idea of...