I've got a 2007 new body style K2500 with a 6.0. My issue is that the fuel filter mounted on the frame rail (until 2006) has been deleted!
The only filter is in the tank, oh what fun..... Anyway i was going to replace it as part of regular maintanance @ 102,400+ miles. Anybody found a resonably priced fuel pump/filter? Or do you just count on good karma hoping the filter won't plug up shutting you down in BFE????

 

I am not sure about an 07 but on my 02, I wouldn't use any aftermarket pump. Go with the AC delco pump. It is your choice if you want to wait till it goes out or not. I know in the older trucks, they will usually start getting louder before they die.