i spent about 30 minutes on a thread on this very topic a few weeks back,including the issue of bolts,calliper interference,tyre size,insurance,and even links,but it was pulled
mk2 alloys (et) off set 33mm mk1 (et) offset 38mm,
so for best fitting of mk1 allots on a mk2 2 you need 5mm spacers
avoid type 13, the ones you need come with bolts http://www.performancefx.net/wsfiat.htm