$900 going to $4k doesn't sound reasonable just for being Canadian.
Your previous post is the one which turned it into "does it make sense to build a stroker" when you brought cost into it.
CID by definition makes power. The volume of air expanded is exactly what creates HP. If you start with less air, you have less expansion. Look at it this way: expanding air is work. Work is HP. More air requires more work in order to expand it - which equates to more HP. HP is work, work is HP. It's physics 101.
