1973 v20 center console fuel tank

[dcbc9095]

I am a newbie to this site as well as to this 1973 v20 center console i just picked up for a cool 1000--even though i have own boats in the past--this boat has taken my interests more--not just because of the design but the awesome forums i have been reading about this v20--as you can see the boat is in great shape--the transom was redone professionly--my concern--my question is pertaining to the fuel tank underneath the center console seat--would anyone have any info on this tank since their is not one now--as to how large it was--etc;also i am open to opinions on how large of a outboard and what kind of outboard to put on this awesome craft--thanks guys--deeply appreciated--dennis