Getting fed up of high-perf , being happy with less

I'm a driver. I like to drive my car, maybe 50 /100 miles for lunch on the back roads up and down hills and sharp curves. We redid the suspension front and back, sway bars, new shocks, springs, discs. It's 383 2bbl. and I get decent mileage on the cheap stuff, and it sounds great accelerating (the best she can). I have a Mopar guru nearby who has a few 451's and bugs me to do the change over. No way. I also have a 3rd gen Camaro that is a rocket, but even with a 5 speed it gets 11 mpg, so driving it long distances is $$$$. Selling it now, although it's a great car. I'm 73 and have done the speed thing since the 60's, and have had it with breakdowns and expensive fuel. Selling the Camaro and keeping the Charger till the end.