the othwer big difference is that one can take the h/hump out (removable). you can always install a high hump, but you need some of the accompaning sheet metal. will give you clearance also if you run a later model A/T
ron

http://s908.beta.photobucket.com/user/padresag/library/turned%20works
http://s908.beta.photobucket.com/user/padresag/library/furniture
and a little history of where I come from
http://forum.woodenboat.com/showthread.php?156542-old-boatshop-in-Steveston