I'm really interested in the cams, specifically the MPG gains part.

Ya, my friends and I talked about swapping heads from the 300zx engine, but I don't know that much about mechanics, so I don't know if it would work.

Kinda makes sense about what Cyclemut says, that mostly everyone on this forum is a father, and pumping up an SUV isn't necessary within a family. Explains why alot of people on this forum are so hectic about performance mods...