Hi Ken we removed the foot (retainer) to allow the box to sit lower I have full bumpers and the rack sits higher than on overriders (I think) We have tacked a stainless bolt into removed part so it can be bolted back if necessary. Its not a DIY job I have access to a very experienced welder. In its current position I have partial rear view where it is fitted As the high level brake light is fitted to the trunk it remains visible wherever trunk is fitted. So it may not be necessary to modify rack other than to drill two holes for internal security bolts