^^^ That is what I was thinking... A 90's era 302 can be easily made to push the same power for as much as or less than the LS chevy motors (not talking from experience, but from a lot reading Engine Masters and other magazines with dyno tests).
Besides, there is already a kit for installing a 5.0L 302 in our Focus. I applaud the effort to do something different, though.
Zetec Crew #137 / Boosted Crew #88
2003 Liquid Grey ZX5 SES - see profile for pics