I agree Kieth, that is why I am looking at the options. As you know from the other post, I am starting to lean toward Alcohol. Since I have to redue the fuel system to convert to EFI, I thought might as well go ahead and convert to alky. Get the cooling effect of the fuel. But am getting mixed reviews from posts that I read about running alky on the street. The truck is only going to see limited street use, mostly is a mud truck (TOY). But would still like to drive is once in a while. To car shows for everyone to laugh at, or to work on BIG TRUCK FRIDAYS. Something like that. Plus hell I get the impression the hP gain won't be bad either.