Guards haven’t been cut but my car has been mini tubbed and the springs relocated into the frame rails. (As 72bluNblu previously suggested would be required)
Once the mods were done the B Body Diff was narrowed to place the wheels centrally within the tubs. Tyres are 12.5’s with enough clearance to still go wider - up to about 325mm would be possible with the way the tubs have been done.