I have an 07 883 punched to a 1200 i bought my tank from HD i had a 3.3 went to a 4.5 gal but i had to buy a different seat.. total to do all of this was about $1000.00... aslo keep in mind my bike is fuel injected so it was just a bit more to change over. but to me it was well worth it as i didn't have to stop and fuel up as much when we went on big rides 