can you clean a fuel tank?

thanks again I looked the web sites posted and most list them starting at 175 remember this is US by the time us Canucks pay for shipping across the boarder, and duty and exchange for the dollar it adds about $100.00 to the cost hence the $275. price, for the last post, (68 barracuda ) thank you if you send me a pm with you postal code I could check into shipping but I would bet with shipping to Western Canada and exchange it would still end up at 125 but thats better than what I got so far, thanks