As far as I know it had the stock tank and it lasted quite a while. I don't think there is much room there for another tank because of the shape of the firewall. The toe in gear helps because it will turn left on you quick if you gun it. Practice rolling out first, its a different beast compared to other tail draggers because of the short tail moment. If you plan on getting aerobatic, I would use the wing struts because that wing is HUGE! Its as big as my trainer's wing. I had a 46fx on it, it was maybe a little underpowered but plenty of fun still. I crashed mine twice and rebuilt it twice so be careful. It has some strange tendencies to get used to because it has so much rudder authority.