I have done a ton of searching with no solid answers as to the compatibility of earlier pumps with ISS. I have a 2008 pump ready to go but just want to make sure that it is compatible with the 2013 transmission I'm putting it in. From what I can tell all 2008- 2013 4l60 pumps use the 300 mm input shaft with ISS. All the valving appears to be the same just want to double check with you guys first!

 

Pump is compatible 2007 up

 

Music to my ears