Every 99 i have ever seen is a 4-cylinder 4-stroke. The only 3-cylinder 2-strokes i've seen are 96's . When i lived in Massachusetts, SAABs were everywhere. If you know 99's to have had the 3-cylinder motor, i'd like to find out what years so i can fill in my SAAB "map". If not, perhaps you could post a correction to the list. -neville