I actually got the part# off of a picture on ebay,i think your buddy was pulling your chain ,port spacing is so drastically different between a 440 and 5.7 he'd have to be hoodeny.I ran the 300c intake because of the long runners it is a torque monster,and its only about 375.00 from chryler loaded. the only draw back is you have to change the timing cover to run it