Re: How lean can I go
 

Daewoos? No, although IIRC they run Mazda-designed engines sort of like Triumph made a variant of the 99 engine for their TR7, or the 4G63 NA in the Hyundai Elantras.

I wouldn't mind ------- with a Rio or Accent, though. I know of two wrecked 2.0 Tiburons I could get swaps from for an Accent from hell, and although it's not Honda quality those things aren't as bad as people have made them out to be. See also: using some misc crap wrecked car's EFI setup as a junkyard standalone to get WTF reactions, etc.