Hi Guys! I have a 727 trans that was sold to me as for a BB,but I'm not convinced...The stamp on the bellhousing is 355-3. Any ideas??? It sure looks the same as the one mated to my 340 so I'd appreciate a little help on this from Dudes that know...you guys! Sorry,I'M A MOPAR NEWBIE.... Thanks and Cheers! Jeff in BC