I've looked through here and have tried researching a couple different places. The thing I keep noticing is that there are no aftermarket heads that move the intake to the driver's side while keeping the exhaust on the passenger side. I've seen a race head that had DPI, but it was just a modified stock head. Does anybody know of a company that has these? With these heads it would be a lot easier to modify the 300. That's the only reason I'm asking. A friend of mine has an 85? with the 300 and 3 on the tree. We are thinking about modifying it to get better performance.