since you brought up the cummins...i'd really like to try a turned up 4bt jack shafted to an outdrive on a 23'. i think i could do a largre leaning post/engine box kinda like the sea vee has. the cool thing is, the 4bt is capable if big power for relatively cheap and is more compact and lighter by alot. it will also burn sluge
the down side being they rattle BAD. anyway, i'm keeping my eye out for a hull