T25 should bolt straight on. keep your eye on the for sale section or check out
http://www.sxoc.co.uk/vbb. Should be able to get your hand on one for about £100 if you look in the right places. Also try your local breakers yard for any s13s as there standard kit on them.
in fact found this just now,
http://www.sxoc.co.uk/vbb/showthread.php?t=280158