there are a few companies out there, literally ring all you can.
dna insurance, quotemetoday and so on, i paid around £2200 last year and does cover the xr2 with mods, but that did push up the figure quite a bit. that was me and the misses, our three cars and anything else that passes through my hands upto 15k.
just ring round, take a few hours on the phone and you'll find one that suits.