OK so bit more research
Talking about the fronts for clarity.
Usually when YJs are being fitted with missing links or frame extensions people seem to use this template (Sorry will all be in inches so I dont confuse myself)
This shifts the rear fixed mounting back 3 inches. Now because YJs are approx 4 inches from pin to rear eye longer this also pushes the axle forward 1 inch to get bulkhead clearance.
Now the mount that Ferris has actually pushes the rear fixed mount back 128.33mm so 5 and 1/16 inches. Just over 2 inches more. Wagoneer front springs are pretty much the same as YJs from pin to front and just under 2 inches longer from pin to rear eye.
So if I use the same missing link setup on the front as is used for YJs
and the same size bracket as Ferris' one on the back it should all fit!!! Ferris' front mount is shorter to omit missing links and make it fixed as well.
Off for some valium now whilst someone points out my mistakes.
Zuk·en·stein - A monster made from parts of cadavers and brought to life by the power of an electrical charge.
What the fool cannot understand he laughs at, thinking that by his laughter he shows superiority instead of latent idiocy.