Put the 2litre 16v ABF unit from a mk3 into it (if it's a valver). You can get them fairly cheap and fit straight in other than being about 1cm taller for the larger displacement, which is solved by a light tap to the frame on the under side of the bonnet! I used to have a mk2 with this engine in and I can tell youi it is far far quicker off the mark and up till about 80mph than a VR6, i know this 'cause I now have a VR6! I wish I could have that car back sometimes

, but the VR6 is a very good all round car too, and quite quick 'straight out of the tin'!
