Can someone let me know does a 1999 Gulf Stream have air springs on it? It's gas and F35

AIR BAG AND SUSPENSION MODIFICATION WARNING:
GULF STREAM COACH, INC. DOES NOT APPROVE THE USE OF AFTER MARKET SUSPENSION AIR BAGS OR THE ADDITION OF SUSPENSION LEAF SPRINGS ON ITS VEHICLES. THESE ITEMS, WE HAVE DETERMINED, DO NOT PROPERLY SUPPLEMENT THE SUSPENSION. INSTEAD, THEY INTERFERE WITH THE RIDE AND HANDLING OF RECREATIONAL VEHICLES ENGINEERED BY THE CHASSIS MANUFACTURER AND CAN BE DESTRUCTIVE TO THE RECREATIONAL VEHICLE AND INTERFERE WITH ITS ROAD HANDLING CAPABILITIES. DO NOT USE SUPPLEMENTAL AIR BAGS OR SPRINGS ON YOUR MOTOR HOME! IF SUPPLEMENTAL CAPABILITY FOR THE SUSPENSION IS DESIRED, YOU ARE ATTEMPTING TO CARRY MORE CARGO THAN THE VEHICLE WAS DESIGNED FOR. UPGRADING WITH ADDITIONAL SPRINGS, HIGHER CAPACITY SHOCK ABSORBERS, OR COIL-OVER SHOCKS WILL ALSO VOID YOUR WARRANTY. ALWAYS BE MINDFUL THAT YOUR RECREATIONAL VEHICLE WAS DESIGNED FOR THE MAXIMUM WEIGHT TO CARRY. MORE WEIGHT IS DANGEROUS AND SHOULD BE AVOIDED. ANY MODIFICATION MUST BE APPROVED BY GULF STREAM IN WRITING, OR IT WILL VOID THE WARRANTY! GULF STREAM WILL NOT APPROVE ANY AIR BAG INSTALLATION OR OTHER SUSPENSION MODIFICATION. BEFORE MODIFYING YOUR SUSPENSION, TALK TO YOUR CHASSIS DEALER. AVOID CAUSING POSSIBLE DAMAGE TO YOUR RECREATIONAL VEHICLE.