Another question�if we swap out our 216 w/3 speed on the column for a 250 w/350 automatic transmission is it advisable to change the stock rear end or can we keep it? If it should be replaced what do you guys (and girls) recommend? Preference is to keep it stock as we have a lot of work to do already. Look forward to receiving your input. Thanks again as these threads and forums are proving to be very resourceful and helpful!!