Clifford makes great Chevy six headers, but they aren't cheap. $289 in black paint, $364 in black ceramic. They're a better performance header than the old cast iron Fentons. I had a '52 with a 235 Corvette 6, dual carbs and Fentons. Wicked cackle from those pipes with Cherry Bombs.

With the stock 4.10 gears, that little six would give all of the late 50's - early 60's small V-8s a run for quite a few blocks.

http://www.cliffordperformance.com/Site04/Home.htm

Click on "Engine Parts" at the top then follow your nose.