I know this is years later but this seems a common thread when searching for long low seats. My early 2007 TT seat has two numbers under it, the selected number is N0025.1ASYW. I also have the 2 UP seat which has the other number N0025.1ANFYW on it. So it makes perfect sense that N0025 is for the lightning longs and that as stated by others the .4ANYW is from the later long models. My two look exactly the same underneath and my short son in law is NOT helped by the lower looking 2 UP seat because the foam is wider at the crotch. I'm going to look for the .4ANYW and hope it helps him, if not we'll get into cutting the foam.