I have the Boss airbags installed with the 4 plus ubolt flip kit.
SloCruiser will provide brackets that make it happen.
Read this thread Rear FJ60 Air Lift / Boss Air Bag Install
Runs great with absolutely no issues. EFi is definitely a lot better than the carb set up for the high altitudes we spend a lot of time in here in Colorado. Never any issues with steep ups or downs when wheeling. I am very happy with the 2FE.
You are absolutely right about that. By the end, I had it as simplified as I could with just the stock 60 tank, stock 60 mechanical pump feeding surge tank with the EFI pump. And I still couldn't make it work reliably.
That is my current setup, and it works great. Very straight forward...
Not to dampen anyone's enthusiasm over the mechanically pump fed surge tank with fuel injection pump inside to feed the fuel rail, but I tried for several months to get that exact system to work with my 2FE without any luck. I finally put in a stock 62 tank with stock fuel pump and never had any...