So i think it's a no go on the crf50 springs i got my forks apart today and the fork springs are about 340mm (17") long and 15.4mm ( just under 5/8") diameter.
Here's a pic of the spring. If anyone knows a similar spring let me know.
http://img32.imageshack.us/img32/3108/p6180152.jpg
Thanks again for any help