Re: Terrible gas mileage,
It could be the original muffler. The truck had 67K on it when I got it. When I opened up the top end to check out why it didn't run, the heads and inside the valve covers were really clean. I found 3 exhaust push rods laying loose. I pulled apart the the intake to check the lifters. A friend of mine got it as a non runner about 6 years prior from a bee keeper friend.
Dual exhaust would be nice, haven't priced what that would cost. Not sure if I would like noisy exhaust though, rather have something quieter.
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