Regarding oilers and filters-
I did this mod and do not find it necessary to run a filter. Still get a little oil out, but a little oil in the lines doesn't hurt anything.
OilFix
Make sure you run a check valve like the one at the top of Catalog pg 462 at
McMaster-Carr right after the output of your york. Otherwise you will lose pressure through the valves in the York
Kilby has everything, however convenience comes with a price. I pieced together my setup from mcmaster and homemade bits 6 years ago and it has not failed once. I do not have a tank, and use it to operate my ARB locker. Once engaged I can leave the locker on all day without the compressor cycling.
Properly set up, you should get years of trouble-free service out of your York. One of the best mods I have done to any Land Cruiser.
You can see the guts of my setup in the picture below. The mounting on my F will not apply to your 350 (that is a GM Alt-"12si"). Excuse the wiring nastiness, picture was taken before everything was back in order after installing the alternator.
Note I have my system split into two "zones," high and low pressure. High is controlled by pressure switch and low is regulated by the "mini" pressure regulator. Both sides have a safety popoff and gauge in the cab. I did this so I could fit more air in a tank of a given size without damaging the ARB. I didn't know at the time that ARB's can handle much more pressure reliably than the manual states.
I made the manifold out of hexagonal stock, and the York intake was originally plumbed to the smog pump connection on my stock F air intake.
Let me know if you have any questions.
