Hi I'm with sureterm direct.
They don't seem bothered about modifications!!
keep whingeing about the price and say you'll get back to them and they will speak to the manager and knock a chunk off.
I changed from a Hilux Surf @ £154 for the year, when I had 5 months left I got the Big Troll and they wanted an extra £139 for the 5Months.. I then asked how much a 12 month policy would come in at and without any haggling they told me £220 as a second car with no NCD to carry over.
They asked what was stopping me changing the policy there and then, I told them it was just the price...'how cheap would it have to be?' I said less than £100 for the rest of the year within 2minutes it was £99.10p .
Get your best price then give them a call, I'm sure this includes a green card and green lane cover as well.
Hope this helps