I will definitely be cutting off the starter pocket and either tacking it back on or welding tabs to it and then drilling and tapping holes in the bell. Starters are wear/service items that have to be replaced at some point and its simply unacceptable to me to have to remove the transmission & bellhousing whenever the need arises.
Hell I won't know if the brand new starter I put on the engine works until I key on, and if it is a faulty unit, then what? Spend the weekend disconnecting everything from the engine, tilting it up and removing the trans, bellhousing, and driveshaft? Nosiree, not this guy. That starter pocket is coming off!!!