Hi all. The L83 in my 15 Suburban is on its way out. (cam/lifter failure, surprise) Its the family ride so I'm trying to limit down time. Since a swap has to happen, I'd like to make it better than it was. Finding some info, but nothing real definitive. Is a switch to a L8T or L8P a simple swap? Is there an existing stock tune I could put in to get up and going? Anything I need to be prepared for? Thanks for any input.