Hi does this say you guys anything

IN TRUNK AIR MANAGEMENT 5 GALLON TANK AND 4 COMPRESSORS, I USED 4 VALVES WITH 3/8" LINES (FAST ENOUGH) FRONT BAG AND MOUNTS, 4" ID ROUND, 2"BOTTOM 3" TOP 2500LB FIRESTONE REAR BAG AND MOUNTS, 4" ID ROUND, 2" TOP 1" BOTTOM 2600LB FIRESTONE

Im looking for air baging my 67 galaxie 500. So what is 4" id round 2 "top 1" bottom, please reply with pics if possible

Thanks Daniel