Guys - I've been working on a '54 Kaiser Manhattan sedan and after sending a spindle out to be measured for disc brakes, now have them up front. The rear is a drum 9" Ford. My problemo is that I can't get a firm brake after much bench and under-the-car bleeding. (The brake system, not me so much) I'm using an 8" power booster and both the booster and M/C are on the firewall with hanging pedals inside. I believe the M/C I bought on Ebay was billed as a Corvette type - dual, of course - but I don't recall the bore size. Want to say 1" if memory serves. I emailed the guy from the website who made the conversion plates for the disc setup, asking for his advice, but no answer after two emails. (Maybe he's buttoned up the business due to the virus) So...I can't find the paperwork that gives me the size of the piston bore in the calipers. Duh on me! My pedal goes virtually to the floor with very little actuation of the brakes. I dare not take this car out on a busy road, now. She's listed as 3,300 pounds without me in it. Can anyone rectummend a bore size or good M/C to try? Oh yeah, I have 2 and 10lb check valves at the M/C for front and rear lines respectively. Thanks so much!