Two suspension questions

[BIASRacing]

15 pornstar with sleeper.

Cab shocks are shot, the proride looks awesome however im not sure itll work with what I've got and I'm almost certain it won't. Ive got a two lone wet kit, 50 gal tank right behind the cab and my pressure release valve is right behind it..(towards front of the truck)

Question 1 has anyone used the freightliner flb cabover shocks? On paper they look like they fit.

Second question is it possible to run an airline and move the levelers into the truck? Perhaps swap out the leveler for a different knob to control the air.