Pro Stock. The good old days

Rat mentioned Glidden reworking the lifter banks in the W2 pro smallblock. Is it correct that welded in the small Ford lifter banks? Thought I heard or read somewhere that he did. Pretty amazing ingenuity. Hagen and others welding up 383 Mopar blocks to accept Hemi heads to run De-Stroker engines in Pro Stock.
Glidden was the precurser to the 48 degree lifter block development