Compression ratio

I should explain why I don't want headers. It took me a while to locate a decent set of factory hi-po manifolds. I was fortunate enough to locate a set at a swap meet for $275.00. Needed a hole brazed over, but other than that, they were in good condition. I also have a TTI exhaust system for the manifolds. That's about $800.00 just in the exhaust system. I looked at headers, but I really don't like the ones designed to run under the steering linkage, and any other headers were just too expensive.
If there are any header manufacturers that make headers that exit in the same location as the manifolds, I would be happy to look into that.