saph and 3 door 2wd cos:

front: 283 x 24 vented
rear: 273 x 10.3 solid

saph 4x4 and escos:

front: 278 x 24 vented
rear: 273 x 20 vented


all this info andmuch more found on here....
quite a useful site with the cross refernece, pcs, holes etc in th electronic catalog...

http://www.webparts.co.uk/National/A...rake_frame.htm