I know your poll didn't include it, but why not go the 340 route? Would be sweet in your car and between the 318 & 360 you should be able to cobble together a spec 340 with a few aftermarket Helpers...just a thought
I have been considering this recipe. I currently have the original teen in my Dart Sport. For a street car I think it would be a blast. Especially when you whip up on some chebby 350 and pop the hood and say it's only a 318. LOL
I had seen this article before, and it is what got me thinking of the 318 thing to begin with. I already have some of the parts listed in that article (Airgap Intake, 302 heads, block) which makes it even more cost effective.