Mom's 67 Cuda

Just getting started and onle have a couple of pics that I need to upload. Learning my way around in the forum. They arn't really that good either. It is a one owner, my Mom, car. 1967 Barracuda "CONVERTABLE". Has just the basics though, 273 V8, 2bbl carb., no power brakes, no power steering, no A/C, does have auto trans but on the collum not in the console.
My thoughts . . Rebuild the original block to keep the matching numbers, but upgrade to a dual plain 4-bbl intake and carb. And just to keep it breathing in ballance, add 2-1/2" exhaust headers.
What do you think? ? ?