Got bored during COVID19 and installed rear disc brakes on my 70 Challenger. Also received a new Strange Engineering 1 1/8' master cylinder that did not come with pushrod, boot and adapter. I purchased the 2 stud adapter and used the stock pushrod. Result: lot's of pedal travel. Some say to use and adjustable push rod to make up for the adapter plate. What has your experience been when installing these lightweight aluminum master cylinders??? Thanks !