So my only car/daily is a 1966 Ford Galaxie 4dr. Love the thing, sunk a fair deal of money into it to make it a great driver with some fun power. It currently has a 390 cubic inch FE engine with some decent mods and an automatic, pretty relevant to the decade of the car(carbureted and such). Runs beautiful, driving it everywhere but it gets 8-10 mpg(seems to hang around that no matter what I change) between the city and highway. I'm in college and I'm trying to look at this in the most budget minded fashion, as most are. I can work with the current engine and maybe get a couple more mpgs out of it with efi/overdrive or something like that, or I could swap in something more modern and easily double the mpgs. I'd like to spend around 2 grand for this. Obviously I could buy a cheap beater, but to me, nothing beats driving this car. As much as I'd really like to keep it mostly original or at least period correct, I was thinking of things like a hemi swap, of course ls swaps are cheap but kinda meh, an ecoboost 3.5l swap would be sick but easily the most expensive. Looking for any ideas/suggestions with where to take this. I'm looking for something between 300-400 hp/torque and very reliable. At the end of the day I might leave the car as is because it's still hard to justify a couple grand for this as opposed to just sucking it up at the pump, but it's fun to entertain at least.