Thank you for the answers: a 'hard no' and a 'yes'.
Bill - you don't mention changing out the yokes as a pre-requisite for making the modification like Irish Swede does.
Is it correct to infer that yours all retained the standard/period yokes and narrower fork spacing?
I agree that it's a worthwhile mod, but sourcing yokes and doing a complete front end job is more work than I would want to undertake right now.
All the best,
If you wanted to keep the standard long axle, you wold need the wider fork trees. But, I've got around that by either using the shorter axle, or modifying the long one.