May be late on this reply, its the season. I have an 06 18.6 DE with 140 johnson 4 stroke, I do think its the same engine as the suzuki 140. Works like a charm, started many years ago with, 16 DE, then 17.6 DE. 18.6 fits perfect for current fishing I do. 140is good on gas, long range with big floor tank, comfortable and safe. Go with 140 or 150 4 stroke, you will not be disapointed, anything smaller will bog down when loaded. Price's are never firm, shop, hagle, take your time and a deal will present. good luck, enjoy the DE.
HM