18 Spline 10" Clutch Question

No problem on answering the question. I drive this car everywhere..... and I mean everywhere in the summer. It is a convertible so I don't get it out in the winter too much but when it warms up, I'm in it every chance it get. It's not my daily driver, but as soon as I get the daily driver parked, I'm in the Barracuda.

Maybe I'm spoiled with my daily driver that gets good mileage, but I sure would like the Barracuda to run with a little less RPM down the highway. I enjoy driving my car and I think this would help me enjoy it a little more.

I know that's probably a lame answer but I'll add to that the fact that my kids are grown (last one a senior in college) and I have given to them.... so now it's time to give to me!!