Random thoughts, In addition to what Dave said.. If there are 2 different sized reservoirs, then it's the wrong master as that is for a disc / drum setup. A disc/disc uses the same size reservoirs front and rear. Also the disc/disc should use the same size lines front and rear.

If I were you, I'd measure the piston size (O.D.) in the calipers and then call Wilwood and ask them for their opinion for a proper sized master cylinder. If the lines are mis-matched, change them as per whats required for the master..

If you are bleeding by pressing the pedal, do not pump the pedal more than 3 times and then crack the bleeder, pump 3 times then crack the bleeder, rinse and repeat as needed.. sitting there and pumping and pumping just forces the air into the fluid and defeats what you're doing. If you can borrow or rent a pressure bleeder, it can make your life much happier.

Also, what fluid are you using? DOT3? 4? 5? I'm in the minority and use DOT 5 silicone.. Love it and will never go back to 3 or 4... it's all in what you get used to.