Should fit it's the same part number for a 1998 mk2 and a 2000 mk3. Note cupras/tdi's etc have a stiffer rear beam than the 1.4's.
i can confirm that the mk3 axle DOES NOT fit. the mounting points are different. they are wider and will not slot into the smaller bracket holes on the mk2! as i found out earlier in the year!

oi, mad mike with the girly jumper. . . .its ather`s!!!! getting all the pics together and making one soon! just finishing off tightening all engine bolts and checking wiring then i will be turning the key!! not as exciting as yours though as i would prefer the sound of a whistling turbo than an 8v. but like you mike, ive done it myself and not rushed it. wont be long though!