I was in a bind and needed a motor to replace my TBI 350 quickly. I went with a new direct replacement longblock because I didn't have the time to research other options. Now that it's in, I was wondering if the upgrades from CFM Tech were worth it or not. I have searched and found lots of posts about them but haven't found the answers I'm looking for. I would call and talk to them, but I know the answer will be "buy all of our stuff and it'll run great". I'd like some real world feedback. So here's the plan: TBI Spacer Injector spacer Adj. FPR w/ guage Hypertech Power Charger maybe even a ported TB (not sure on this, any suggestions?) Also want to add "Autozone Special" Flowtech longtube headers 3-wire o2 sensor Will this help anything? Power? Fuel Economy? Or should I save my money? Will it run Ok w/o tunning, or will I deffinately need to get a comp. retune?