I have nothing against SBC. I have raced them in roundy-rounds with success along with Mercury, Ford, Buick and Pontiac. I have had several Chebbies including my 1st 3 cars that were '56 Bel Air, '55 Bel Air, '61 Corvair, and several others including a '67 Camaro and a '94 Camaro. No complaints. SBC's are great little packages. That said, if I had a Chevy today, it would have a really cool 348, 409 or built up 6. Anything prior to '55 would have nothing but a six. Because SBC's are so common and in every thing from VW's to Jaguars, I don't want one.
Oh, you do? Great have at it and enjoy. There are lots of cool Chevies you can put it in.
One of the great things about doing Fords is that there is such a wide selection of engines to opt for. I have an FE in an Edsel, a Y-Block in a '55 and a flathead in a '51 Vicky. I love each and every one and all of their peculiarities.