Use this link
https://www.rvusa.com/rv-guide/specs...vel-trailer-t5 and scroll down to the Keystone section. Select the appropriate Cougar group (I think there are 4) and then the year and model. It will give you the floorplan and more specs than the manufacturer's web site, including the number of tanks and the capacity of each.
For example, the 2015 Bullet 220RBI is here:
https://www.rvusa.com/rv-guide/2015-...220rbi-tr22423
And here is the tank info:
Holding Tanks
Number Of Fresh Water Holding Tanks
1
Total Fresh Water Tank Capacity
43 gal.
Number Of Gray Water Holding Tanks
1
Total Gray Water Tank Capacity
30 gal.
Number Of Black Water Holding Tanks
1
Total Black Water Tank Capacity
30 gal.