Probably easier with the bonnet off but not essential. Remove grille. You may need to remove the wheelarch liner on the side you want to change. There is a nut /stud which goes through a hole in the wing. The way it is fixed seems a bit variable. I have had one where the nut was behind the indicator unit and another where the nut was on the inside of the wing.
cheers guys! i just remebered someone saying it a was hard (think it was changing the radiaor) but seems quite straight forward
thanks this time next week my 33 will be on the read at long last! i spoke to a guy called alex who sells 33 parts and he said theres only 92 1.7 16v cloverleafs left in the uk aswell