There is a "gasoline engine" sub forum on the oilburners.net site. Look in the Ford area, and scroll down to the gasoline engines area.
The people on oilburners are really great--at least on the IDI diesel section--I can't speak for the powerstroke fellows.

We just had our annual "East Coast" IDI Rally. This year it was in Bowling Green, KY. We had peope as far away as southern California make the trip.
Read the rally-related threads--they had a great time.

Remember that except for the engines, there is a lot of similarity between your F150 and these diesel-powered F series trucks.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags