The SX owners club are trying to get numbers together to see if its viable to have an insurance brokers quote for modified enthusiasts cars.
All you need to do is send an email to this person
chrisdrx@hotmail.com
With this in the subject line "modified car insurance"
Details here
http://www.sxoc.com/vbb/showthread.php?t=443198
Original octane thread here
http://www.octane.ie/forum/showthread.php?t=34326
Cheers,
Ryan