Trans crossmember question

Car was a '73 318/904 car, swapped in 340/727 combo - the trans crossmember holes on the frame are different on the 727 crossmember, kinda surprises me that they'd drill them different if both transmissions were available in the A bodies (?). I'm assuming I can re-drill the necessary holes but wanted to double check if anyone else has seen this and resolved the same way.