" From: farna@xxxxxxx " " I've heard of a Spirit with an AMC four, not positive if it was a late " production or transplant though. More likely a late production, as a " transplant would require changing transmission as well as different " engine mounts. this would mesh with ken siroonian's eagle experience. " Most of " the time a smaller engine is false economy -- the engine has to work " harder and burns nearly as much fuel as a larger one. The Pacer is a " prime example. The V-8 model only got a couple more mpg than the six, " but acceleration and overall performance was noticeably better. Ford " discovered the same between the 200 six and 302 in the mid 80s " (Fairmont based) T-bird -- the six only got 2-3 mpg more than the V-8 " but other performance was drasticly hampered -- more so than with the " Pacer. I think the T-bird with the six was over five seconds slower " 0-60 than the V-8. this is widely regarded in jeep circles as well - wrangler fours get just about the same mileage as the six, and having to work harder don't last as long. i remember - when i was 12, my folks were shopping for a new station wagon to replace our '55 chevy. they settled on another chevy, a bel air, which was the cheapest version of the biggest car they made. i don't know how they figured mpg those days, or even where i read it, but i remember discovering that the 230 six was good for 20mpg but the 283 got 23! so naturally i pitched the v8 but dad wouldn't go for it. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought