The Adventurer series trucks were not totally uncommon, but, they are the nicer trucks of the Sweptline series having the bucket seats, chrome package etc. The Adventurer package first came out in 1968. It sounds like you have the BEST of the options too! As far as the engine goes, well, I personally like to have the original engine, but, it doesn't seem to matter with the Dodge pickups. I agree with you, there are plenty of "junky" trucks to use for concrete, and nicer/older Dodges should now be enjoyed/restored and not used for "haulin junk". There are some people looking to get trucks in "nice" condition as, the Dodges had a problem with rust. Try these two sites for Sweptline trucks. www.dodgesweptline.org www.sweptline.org Yes, they are two different sites. BOTH have great information dedicated to the Sweptline trucks, and BOTH have great Sweptline forums. Check them out. Jim