ADDENDUM:

http://homepages.ihug.co.nz/~stompyz/changes.htm

Here's a list of changes needed to fit the Formula Atlantic engine in an AE86.

Remember, though, that minimum price for a used running engine, is about 9000 dollars. It's still 18000 for a new one. What you saw was probably just a regular 4AG with some FA parts... no way is anyone going to sell that low.

And if you want those parts... here are the *gulp* prices...

http://www.toysport.com/New%20Products/Atlantic.htm

5000 dollars for a crankshaft... ouch... a full, branded turbo kit costs less...

[size=1]By the way, thanks... this was interesting research.[/size]