67 4x4 2 inch lift options???

[67gmcstepside]

Guys, I am at the point were I need to start planning a new suspension and would like to get 2 inchs to clear my existing tires better. I have serached and have gotten some direction from others on this site. What I have is a 3/4 ton 67 with 72 1/2 axles. I have 2 leafs front and rear. I wish is was easy as ordering a lift kit but due to 67leafs sizes it seems I can't go that direction. Per MGross I can add a helper leaf and a zero rate leaf to gain an inch but what other options are there? I see on LMC that I can add a 3 leaf replacement but not sure if I would get the 2 inches needed to get the tire clearance. I am sure there are other 67's out there that added lifts or new suspensions and would love to hear what was done.
Any input would be appreacted.
Don