ORIGINAL: daveopam
For those who have never had the UCD. The tank is going to be high no matter. Even with the floor hacked/removed it's just the way it's built.
This is very true but I have found some of the Sullivan tanks will work. They have some great odd ball shapes and designs. Think of the flat wing tank mounted low and inverted. The UCD is a perfect plane for using the YS or OS pumper engines. The cline regulator works but it's another added cost to the model.
Just food for thought.