seen as you are on your first car i assume you are still young and have no no claims bonus.

in which case dont bother thinking about big mods such as turbo conversions and engine conversions as most insurers wont insure you and if you dont declare the mods to your insurer your gonna get fucked over if you have a crash as the company will either say it was null and void cos you didnt declare and therefore wont pay out and you'll ge done for no insurance and banned

OR

you will have to pay an extorsionate amount to them before they will pay out.

also get some experiance under your belt first as its too easy to spend thousands on your first car and then go and crash it!

may not be the advice you want to hear mate but it only takes a few mph too quick on a wet road and you've rolled it into a field completely destroying it!!!