nice looking truck dude!!! =)
if I was you, I would certainly start saving my money for a quickie long block rebuild to bolt on aluminum heads, intake, and nice headers... because that can save you as much as 300 lbs in the front end... not to mention let that huge block breath more freely.
I did the same thing with my fan though.
I got a plastic one from a modern Silverado to save weight and add extra blades, but kept the "severe duty" clutch... it sounds like a fan boat at start up, but it NEVER runs hot =)
You aint kiddin!! Those big block heads are heavy as hell