In my research, I found that GM came out with an HO version of the engine in 2004. It has 10:1 compression and 2.00 and 1.6 valves. Its design is intended for it to be more efficient when used with LP gas. You can get them with a 1 or 2bbl manifold, not to mention fuel injected too. I also know that the sprint car guys used the 2.5 with the 3.0 head. There is a guy on the inliners site that has stroked a 2.5 and installed the 3.0 head. He is planning on putting it in a Jeep. I've always thought it would be great in a 4 cylinder S10. The power of a v-6, but the efficiency of a 4. It has better Horsepower and torque number than a 216. I'm sure it would get better fuel economy too. Not to mention the bonus of losing that dreaded front end weight.
