I picked up a 2004.5 crew cab and #1 is scorn really bad as well as #5 must of broke ring because it has deep ridge about 1.5 inches down from deck . I can score 24 valve blocks pretty cheap around here say out of a bus or early 3rd gen . Are the blocks the same . I know pistons and injectors are different. Looking just to use block and build back up using new parts or my parts etc . Thanks guys new to forum and sorry if it's been asked