All MG Midgets from 1962-1966 and Austin Healey Sprites including Bugeyes from 1958-1966 when equipped with disc brakes. This is exactly what you want for a 1098 or an earlier Midget or Sprite converted to front disc brakes.
NEW BRAKE CLUTCH MASTER CYLINDER FOR UNIVERSAL KIT CAR 3/4" BORE
New Brake Clutch Master Cylinder MG Midget 1963-1966 W Disc 3/4" Bore
New Brake Clutch Master Cylinder Dust Pedal Boot Fume Excluder MGA
New Dual Brake Clutch Master Cylinder MGA MG Midget 7/8" Bore