X-10 diff screws compatable with streetwise diffs?

[slypdawg]

ok, I am in need of new screws for the rear diff on my Streetwise rally car (as well as body posts (still)) and was wondering if the screws out of the X-10 diff would work. it's a M2 cap screw with a 1.5mm hex. the manual doesn't say how long it is, tho (grrr...). also, if anyone knows where I can get a rear brace it would be greatly appreciated. I'm about this far from going to a local machine shop and getting one milled out of 6061 aluminum, no matter the cost. the front isn't a big deal as there is no damage to it at all, other than a few minor scratches (road rash, most likely)
EDIT: oh yeah, and are the protoshocks and rockers off of the X-10/XRS compatable with the streetwise?