Nice B&M 250 blower for BBC with rectangular port heads. Just pulled off of my boat. Has 2 pulleys the one on it put out 7lbs of boost the other one 4 lbs of boost i just bought the small pulley last month cost me $300 from weiand they had to make it. complete bottom pulley, belt, blower manfold, accessory pulley $2000 call paul 530-339-1265
