I would guess that as long as it fits on the brake rollers you will be OK. However, even that can be got around as MOT stations use on board meters for permanent 4WD vehicles that can't be tested on a single roller system.
Talk to your local station. Normally, as they don't measure ride height, the tester will not have an issue unless safety is compromised, like running on or very near bump stops, tyres rubbing on bodywork or suspension parts, etc.