If you do this then what makes you think that they won't look? Plus any mods on your bike will be particularly scrutinised by the Ins company if you have to make a claim, for instance if you bin it and it's a write off they take the bike away and have it independently checked by an approved repairer, they will spot it cos it's what they do all day every day, then when they tell the company what they have found your claim is not only refused but they will come after you for fraud and the cops will come and visit all for the sake of getting to 70 a bit faster, it's a no brainer really, ride your bike as is, take your test and get a bigger one. Or ignore this and take a chance. We don't think your wrong, after all most of us mod our bikes in one way or another, but the difference is we have a full licence and don't try to do wheelies down the high street anymore, well not often anyway. Plus even if your in the right (running with restriction on) and someone knocks you off the fact you have the mod on your bike means your NOT insured as your licence is invalid due to the mod.