360 does not seem to be making power and is slow in the 1/8. Need help and/or suggestions

I agree, it's very slow for what it is. I agree, your expectations were realistic. I strongly disagree in throwing parts at it such as heads. Fix the issue at hand. Get it to run what you expected it to run, then add better performing parts. Way too many folks just throw money and "upgraded parts" at their projects to substitute a real underlining issue(s). Tuning and tweaking is time consuming and a learning process, but it's worth it.