cleaning out my parts building and found a bellhousing and 3 speed trans for a big block my buddy who passed away gave me many years ago..the bellhousing is 2468370..65 model B&C or 67 and up a body...the trans is a 3 speed for a 75-78 truck..he machined the bellhousing for the big 4.807 bearing retainer and redrilled it to fit this 3 speed..brewer make rings to go back to the small bearing retainer...did he ruin this bellhousing?