Monroe MA829 Max-Air Adjust Shock Absorber

do they come with air lines and valves

If my 1997 ford f150 is lifted 3.5 inches, will this fit?

picture shows 2 shocks??????

I'm new to this towing thing. i have a 2002 ford f-150 xlt. it states that my towing capacity is 7,500 to 8,000 lbs. will these air shocks work?