Hey Robb
As you know, i have owned, wheels, built, re-built, both, so here is my two cents.
Quick Jist:
-I started with a 91 80
-Had to sell it to pay for a divorce!
-Bought a 60 after divorce mess was over
-Installed OME kit
-Didnt like the ride (compared to the 80)
-Did a custom spring over swap
-Didnt like the ride
-Spend probably close to $2-3k experimenting with every spring combo possible, still didnt like the ride
-Ditched the 60
-Bought my current 80
-Messed around with a few differnt spring combos
-Got it dialed in damn near perfect now
-Rides like a benzo on washboards in mex doing 40-50mph!
Sure, gas milege sucks, but i wouldnt give up the comfy ride of my coil sprung 80 for a leaf sprung 60 anyday of the week regardless the mileage and "coolness factor".
Things to consider:
-You would probably get 1/2 of the $ that you have into your rig back
-You would still have leaf springs
-You would need to do all the same or similar mods to the 60 costing big $
-You would still have leaf springs
-80s are everywhere now
-You would still have leaf springs
-When traveling remotely, i would prefer to have similar rigs with me
-You would still have leaf springs
-Have a somewhat unique rig has a lot of drawbacks, break something in mex, chances are you will be with another 80 or 2, good luck finding 60 parts south of the border!
-You would still have leaf springs
-Having a diesel 60 in san diego is like having a bag of $ sitting in front of your house for the car thieves! Ask Brett!!!
-You would still have leaf springs
My .02
Here are some pics: