I use QA1 double adjustable coil overs without the springs and I converted the top with QA1 BAR350K T-Bar Kit.
Compressed Height: 12-1/2"
Extended Height: 18-3/4"
Ride Height: 15-1/4" to 15-3/4"
Spring Length: 14"
Scenario 1 is the more expensive route. You'll need a return style regulator, filter and braided line from the back to the front and then back again. The regulator will have an inlet port, a port to feed the rail, and another to return fuel to the tank.
Scenario 2 is easier and less expensive...
I doubt these will work for you but I have these in my 8.5 housing. You need something meant for the upper housing otherwise the upper control arms won't fit.