You might even find that some of the modifications don't affect the premium - but they'll want to know about them believe me. Unfortunately looking at the list of mods you have, you will naturally find it hard to get a good quote - insurance brokers will take one look at your age and then see 'loud speakers, stickers, big wheels, fibreglass panels and bucket seats' -these are typical of drivers of your age and you will instantly be stereotyped as boy racer. It's a sad fact but one that can't be escaped.
Having insurance is for everyone on the road - not just yourself, declare everything - or take it all off and drive a standard mini for a while.
good luck
