I installed disc brakes on my 55 sunliner but could use a booster,with the 351 that is in it now I can use most size boosters made but when I reinstall a Y block what size of booster will I be limited to.  So is there anyone with a 55 or 56 that has a modern brake booster with a Y block

Butchering up everything I can get my hands on in Dayton Ohio