I have run the 268H cam in other engines (SBC and BBC) and it seem a little too much for a truck with a 3.08 gear. And a little too much for a stock converter, even through Compcam says it is the biggest cam that can be used with a stock converter. That is why I think the 260H would be better (212/212 duration at 0.050), as I have run that cam with a stock converter with a 3.08 in a 1/2 ton truck and it works nicely.
However, I would limit compression ratio to 9.0:1 with the 260H if you want to use cheap gas, and 9.5:1 for high octane. The 268h can tolerate a little more compression, say 9.25 to 9.75:1 with 87 to 91/93 octane fuel
The 268H does better with a little more gear, especially in a truck since truck tires tend to be taller. I do like 3.08 gears, as they are a good compromise between city and highway gearing, but the 268h would like 3.40-3.55 gears.