A lot of people have really good things to say about Alcan springs. They will custom make springs for your setup, add height, etc., and they are said to ride great. I had Rocky Mountain parabolics on my old NADA 109 Wagon. I liked them, but decided one day that I wanted more lift, so I put on the military shackles. That accomplished the lift, but bound up the front driveshaft. So you’d need a custom driveshaft if you plan on going that route (probably a double cardan one as well).
This topic came up a while ago on the GNR board and one guy was running 4” longer rear springs (off a chevy stepside I think he said) and 88” rear springs up front. He said it rode amazingly and had great articulation. This modification required moving the rear most spring hangers back 4” and the front hangers (horns) out 2”. He also raised/moved his shock mounts as well I believe.
That’s my plan for my next build.
61 II 109" Pickup (future project)
66 IIA 88" Station Wagon (sold)
66 IIA 109" Pickup (Restomod, 5MGE, R380)
67 IIA 109" NADA Wagon (sold)
88, 2.5TD 110 RHD non-hicap pickup
-I used to know everything there was to know about Land Rovers; then I joined the RN Bulletin Board.