I've been busy in the shed, getting the old girl up and running, with the hope of getting some miles in this summer, before a strip this winter to tidy up.
The 5.5" back wheel off a k just squeezed in with some minor spacing issues, which included shortening the sprocket bolts which had an odd thread size of 10 x 1.25. Luckily I managed to get some help from a friend at work.
The front sprocket is spaced as far out as possible on the shaft, and best as I can measure is 1mm out of line, with the rear one. I should have measured the original set up to see how close that was.
Reversing the rear sprocket has gained some, so shouldn't be far off.