Way back when Classic Parts was still called Chevy Duty, circa 2005, if you had a 10 3/4” you had to send them your pressure plate and disc and they would rebuild them, or shop it out. I did that for my 50 3600 with 216 and SM-420. It took about a month to get it back. Great workmanship.
Any competent machine shop can drill and tap your flywheel for a different PP.
