im running dobinsons 325/725 (2.5" on first perch of 5100). it took time to settle.
when i have a heavy load i get reverse rake even tough the 725 is 2.25" tall in my rear.
i plan to drop the front end to 0 perch and then upgrade the rear coils to 729 possibly, most likely.
this could all change if the front end gets stuff added to it though. dobinson coils for kdss in the rear highest rated spring are the 729's- 600-800# weight.
Dobinsons 5th Gen T4R Suspension options - lots of choices