273 vs 318

I've noticed a lot of lol on here are like me. More love for the smaller sizes due to gas and pride when you smoke something bigger and it's more usually imo due to most drivers not really knowing how to race lol.
I've always opted for the smaller motors. Where as my dad argues with me I need to get a real race car. Everytime I talk to him about the dart I got for my missus and my plans for it he tries convincing me to put a 440 in it along with my buddy and most others I talk to. My neighbor is with me and keeps edging me to slap a turbo on it.
I really like when these threads pop up. It not fully about the power but the economy with the wanted power to go with it.
Personally if going for a v8 upgrade for a daily driver I'd probably get the 318. More possible lower with the build. Availability is higher. The extra weight is easily compensated by increased up and take abilities.
I'd take the 360 if I had issues finding a 318 and I was on a tight time frame.
273 probably for gas economy and a possible turbo.
440 if it sat on a trailer or in my garage and only showed and dragged occasionally. But I'm more into drifting and rally racing than going straight. Main reason I gave this car to my fiance. I appreciate the classics to much to smack a wall or such and have to cut it up to fix it. 80 and90s car are just throw away cars, toys