Okay so its almost 1 am here and I should be sleeping being that I have to be up for work at 5:45. I however am getting my exhaust done tomorrow and feeel a bit uneasy about the flowmaster I purchased today. The box says 50 series street delta flow 3" IN dual 2.25" OUT. The part number is 9430602. The side of the box only lists the flows I knew of 30, 40, 50, 70, and 80 series. However when I look it up Online by part number it tells me I bought a 4 or 6 cylinder flowmaster. But this partnumber is only listed under 50 series. VERYNERVE racking I drop of my truck tomorrow morning. Is my V-8 gonna starve because of only 2.25 dual pipes rather than 2.50 dual pipes? Help! I really can't sleep with this on my mind. I am paying good money to have this done and rather not have to get it unwelded buy a new muffler and do it again.