Hi all i built a Dunlap D-27 tunnel around 2003 raced it with a O.S .21 XM stock set up very competitive at the time recently in 2017 converted it to p-spec with UL-1 motor on 4s , In 2008 i built The Dunlap 30 inch W.O.F set up for FE 4s full p 3674 2200 kv and 6s with a 4082 1600 kv a real hand full at 60 mph both hulls never had ride pads installed. The first hull Jerry designed around 2000 the second somewhere around 04. My question here is has tunnel hull design changed a whole lot over the last 16 yrs ! I have not seen any new plans or kits since that time period . I am keeping a close eye on the new Zippkits tunnel. Regards Andris Golts