Sorry my last post didn't read to clever, the al-mega LX did not exist is what I meant to say.
Looks a good buy for £50 I must say. Check out the old catalogues in the scans section to point you to a spec, both the al-mega XT and DX were stunning lookers. IMHO the best looking alpinestars year for graphics.
You might find yourself in luck with decals too. Gil_m is trying to reproduce some 1991 ti-mega decals at the moment, you might be able to utilise most of those or ask if he can change the ti to al!
All the best with it.