273, or 318?

I’ve got my 273 torn apart, and need to decide which way to go. All original engine. Crank and rods are fine. One cylinder won’t clean, so it will need bored. Do I stick with 4bbl pistons, or by 318 pistons like kb167? It would bring compression down about a point or so, the way it’s sounding.
I plan on running 3.73 gears and putting in an A500 overdrive. Try to stay with like the Isky E4 cam. I want to make an all around good driver, not just a drag car! All opinions welcome.
318 pistons are bigger in diameter than the 273. I, myself would rather have the 318 over a 273 any day