I am going to purchase a bimini top for my 04 170cc. Could someone tell me the size I need to purchase. I think that i need 73"w x 54"h x 6' long. Does this sound right. I looked at a web sight and it shows the triumph taking a 69" w x 54" h x 6' long. When i measure my boat at the cc it measures 69" inside to inside.