I have a set of crane dual springs i got from vinci performance and i also orderd some replacement valve seals i planed on changing while i was in the motor. i got to looking tonight and the new valve seals i have wont fit inside the springs the top half will but the bottom won't. so what valve seals did you guys use? can iuse the ones on my 99 5.3 right now.

 

You can use the ones that are on your truck now with the spring seat (the black part) from the spring kit. When I installed my Crane duals, we had to change the valve seals to the old style (like yours). The new style look like sombreros and the spring won't fit over them.