The biggest hurdle installing and old school motor in a newer car is the law. If you have to have it tested then it will probably have to have all of the emission equipment of the same year as the car. So the carburetor is out for a lot of states.
With a welder and some wire diagrams I don't see why you couldn't install an old school SBC in a newer car as long as its rear wheel drive and the trans and engine will fit. You can wire a carb setup with 5/6 wires if you just want it to go down the road.
Hot wire to starter
Hot wire to ignition
temp gage (add extra wire if you want an idiot light)
oil pressure gage
I have a SBC 350 in an 86 Fiero, I used 8 wires to hook mine up but I also used an electric water pump and I hooked up a tach. The only thing the stock computer does is connect the wires, I removed the power wire and I don't even get an engine light on the dash. I used an adapter plate and the stock 5 speed.