OK, I'm dumb, need help

I thought my early combo was pretty powerful. At 106 in the Qtr that's around 350 hp. But one day some friends piled in, totaling 5 of us, and the skinniest was me at 200. So the extra 800plus pounds was easy to feel, even in 10.97 starter gear. I kept it low key,lol. That combo was 3650, so about 10.4 pounds per horsepower. Adding 800 put it at 12.7. It kindof felt like an early teener. Not long after, I took the rear seat out,and it's never been back in.

If I had deeper pockets, and if I thought the World was gonna be here for longer than I do, I would for sure turbo something;
I think an old thick-wall teener. I have a 69 here I think could make a good foundation; or maybe one of these 340s under the bench. Or heck, I even got a 65- 273 in the shed. Yeah Ima thinking 273@ 400 should make some torque, and with 3.23s and overdrive I should be able to squeak some serious mpgs out of her. But then I recall that 367HO currently under the hood,Hyup I could detune that a fair bit, and then the turbo could kick it back up a few notches.
Hmmmmmmmmmmmmmm, decisions decisions.
But the slanty is staying in the Volare,lol.