This is pretty much what we have to do to get them legal over here, except for the fenders which we don't need to run also in the UK the last paragraph is not the same for us as we are classed as a car because we pay car tax so therefor can use any road. When I did mine you had to put them through a SVA test to get a log book not just an MOT, not sure if that is the case now.
Don't worry about getting any hassle from the law, you won't unless you act like a dick