Hi, and welcome to JOF.
I have a sales brochure for the 2000 Eagle TTs and FWs which shows the floor plans and specifications for all models in that year. I don't believe there are any differences in the tank capacities between the 1999 and 2000 year and even if there were, I'd have to think they would be minimal. My 2000 266 FBS was the same in both years as the dealer accidentally prepped a 1999 model instead of the 2000 we purchased.
The 2000 floor plans and specifications can be
downloaded from our library of Manuals or viewable in the attachment below. Enjoy!