In my young days, I had a 268H cam in my Camaro. It was my daily and drove it 50+ miles 6 days a week for work many years. It had 9.5:1 comp and had a nice little lope to it. No vacuum issues and ran strong. Chose it for driveability and good manners. But like MikeB said, I would probably go with a 270H.
Go to YouTube and check out what cams sound like:
268H
https://youtu.be/ZGgeoQgNBkU
270H
https://youtu.be/1bsPjYt-Zfk