Curtis,
The 58 Panel that I bought a couple of months and about 3 grand ago, had a 69 Camero 327 already in it. Even tho it's only got a 2 barrel Rochester carb in it, it will still light up the tires. It appears that there were no major modifications done to the engine compartment. Bill is right, the book I have for a 58 shows that v-8's were indeed an option. Any small block chevy should fit. Mine has headers but when I tried to install Jegs headers for a 67 Camero they wouldn't fit past the steering box on the driver's side. I don't know who made the headers that I have, so I can't help ya there. Good Luck.
Mike
In loving Honor of
PFC Benjamin Gandalf Young
30 March 1988 - 27 May 2007
Sometime I wonder, Who you'd be today
www.BENS58.COM