Doing research on re-powering my 22-2 and did a search on 4-stroke vs HPDI's....(I didnt pay attention to the dates of the thread until about 1/2 way through) after reading through several posts in the thread,,, I came to an entry where the writer was giving a price break down on cost of use and quoted $1.85/gal in 2004... literally stopped me in my tracks reading that.
$2/gallon sounds pretty amazing right about now!
On a side note--- any thoughts on a 2002-2005 yammy 150 hpdi with about 300-500hrs to re-power a 22-2.