It's probabaly an XST style, which has the old "re-curve" bottom with a pad... They were about 17'10" I think, approx 700 lbs and very fast... Untouchable for the day and still faster than anything else but the newer style Allisons, no excuses they will flat out haul arse... I think most if not all had no carpet, huge livewell for the day, and a somewhat more centered console than a standard Basser... First Bassboat to go over 100mph, and they'll perfrom great even with an inline or V4... Mt Dad had one with a tired 2.0 liter 150 Merc when I was a Kid, and it would probabaly run well on up into the 70's with a 26 pitch stock Chopper... I'd love to have another one if it were straight and solid, and a modern V-6 would be perty snappy on one... Click on the "ALLISON" link at the top of the page, and go to "older Allisons"... I think there is a good pic of Andy Cobbs boat right toward the top of the list on the left side... Nice example Andy..