I found last year that most companys were ok with most of my mods. the only ones that seemed to cause any issues at all was oddly enough the Front fork revalve and springs from Ktec. a couple of firms wouldnt insure me on that. a few firms loaded my premium with all the extra mods but wasnt by a huge amount mostly £10-20.
I was with Ebike for a couple of years and they never had a problem with my mods but i was loaded by an extra £12
but had SO much hassel with them over insuring a 125 for a short time and its allmost impossable to actualy TALK to someone there so i didnt like the idea of trying to ever make a claim or if there was another problem down the line.
So this year i went on meercat site and got the top 3 qoutes and then called those to explain all the mods. then picked the one that fitted me best. was around £100 FC wit all mods declaired
Never had any site bothered about the ivans kit, allthough i do sometimes declair it as a Dynojet kit as some firms have a box for that.