Leaning toward the Wilwood 1 1/8 MC since it worked for you. Says its for power assisted and 1" for manual but I'll go with tried and true. Are your brakes SSBC or Wilwood? Guy at SSBC said the old Disc Drum MC won't work on 4 disc setups, so that may well be my problem. He says Disc Drum MC's work more on volume not pressure. SSBC's MC's for Mopar are 1-1/32 but 1 1/8 would just push more fluid. My setup is not power assist either. Wilwood MC's look so much better and less bulky.