Exact 1/18 scale small block engines?

The pix are of the boock I got from him. It's a scan of a real small block block and shrunk down. I'm sure that makes it pretty accurate.

Nice. I always wanted some sort of reference model. I work in CAD daily and have been curious about some bad ideas I have...

I'd be down to buy a Keychain too though. Would make a neat addition to my desk.