Sorry, not the most exciting of questions.... So swap in a D16z6 (because I know and love it so well), a JDM D15B engine ($435 plus shipping) or build a mini-me with a JDM D15B head (noticed a head in the classifieds for $200)? This car will be my winter beater, but I would like it to go faster and I'm feeling cheap. I need my VTEC and I like using cheap gas so I want to stick with a SOHC engine. I'm also on the hunt for another S20 LSD tranny for this car, but in the meantime, I have an extra Si tranny kicking around. Your thoughts?