Darn it, I was just home earilier today and I could have picked up my Mopar Muscle book to give you specific info. Okay, here is the best I can do off the top of my head. The 318 (which is a 5.2L engine just incase you were wondering) I think might have been the base engine in 1971, if not the slant six was. The engine output was around 230 gross hp, the next year when they switched over to net hp it was rated at 150hp. The 318 (5.2L) was built primarily for reliability and cost.

I don't know any acceleration times and I have absolutely no clue how it would feel behind the wheel. If the car is in good shape for that price, it is definitely something to consider. You can always modify it or drop in a larger engine if you want more power (which who doesn't).

If you brother has an 1993 F-150, I believe it would have the small-block 351 (5.8L) Windsor engine, unless he dropped in something bigger. That produced around 210-215 hp (net) unless it was the Lightning model which is very rare which produced around 240hp (net).

Comparing a 1971 Charger with a 318 to a F-150 is a very difficult comparison to make. They are two very different vehicles. When you make a reference to "Triton" are we still comparing your brother's F-150 or a different one? The Triton series started in the 1997 F-150, the one offered in the 1993 F-150 was a Windsor engine (completely different). Also what transmissions does each vehicle have equipped: auto or manual (if manual please list the number of gear ratios if possible)? In short, some more info might need be required.