Forks

[Manky Monkey]

Use a vernier gauge to measure the diameter of the fork tubes & the top of the fork bottoms. They should be able to tell you which one you need then.

[morrag]

If you are retaining the CX forks, then a good old steel brace, such as Mr. M suggested would be best, and the GL forks, which are the same as the CX's,  do in fact use a steel brace/mudguard support, under the front mudguard as standard, so a similar item made from 6mm M/S should improve things, and you have a pattern to follow, simples!!!