This is the dimensions of my Avy sac for the port side for my 03 Avy.
Main 22H X 24W X 52L
Arm 10H X 24W X 62L
You will want to place your fill, empty, vent holes according to your pump set up.
Main… LXWXH = 27456 = 118.857 gallons = 992.46 pounds
Arm.. LXWXH = 14880 = 64.416 gallons = 537.87 pounds
Total cubic inches = 42336 = 183.272 gallons = 1530 pounds
*Water 8.35 pounds per gallon