A Flatty will eat up a small budget quickly. they look awsome but if your on a budget, look past a flathead. Buick Nailheads also look nice, you could find 1 in running condition in a '64-'67 Riveria, as well as some Buick Wildcats. a repaint and some nice valve covers, you'd have a nice looking engine. I'm 1 that goes for the non normal stuff, that's 1 reason why I'm turbocharging my '67 Falcon's 200 I6. keeping the 235 str8 6 in my '51 Chevy, rather than going V8.