Clutch Question

[Steve Jones]

I know how to convert a later (forward starter) flywheel into an earlier (rearward starter) flywheel but can the later clutch cover (no ring gear) be converted into an earlier clutch cover (with ring gear) by shrinking on an appropriate ring gear? I've never considered it before and I haven't got the full set of parts available to compare and measure without removing an engine from a car. I 'think' it might be possible as long as the later clutch cover was, or could be turned to, the required diameter but am I missing something?

Steve