Mikey it depends how wild you want to go. There are many guys on Corral and ModDepot that have some very healty N/A set ups.
- Gettign some extra cubic inches in the shortblock would REALLY help the most. Either a big bore, stroker or big bore stroker.
* HEADS - Ditch the B Heads (96-98 cobra) for the most superior numbers. They are great for forced induction, but don't work effectivly for N/A combos, they really don't promote good torque. There are some guys using them and doing decent with them. Pick up a set of 03-04 cobra or FR500 heads for the biggest results. If you are going really big, no expense spared there is the 5.4L GT heads. But your looking at $2000-3000 BARE.
*CAMS - I've never been a fan of 4V cams. I know lots of guys are seeing decent numbers w/ the FR500 setup. You would have to read around to see what else is making waves w/ the NA heavy hitters.
* INTAKE - If you go with the 03-04 heads you have a couple diffent intake options. The FR500 intake will make sick power, it just cost sick money...$2500ish. Have a 99+ intake ported or made into a shortrunner intake. The other option is the aviator intake. If you stick w/ the B heads, look for a good ported short runner intake. The best is the JSR made by JIMS SVT on Corral. They make the most power and have little or no loss of torque. I have one on my car that might be foresale soon. So talk to me if you go that route. PHP also makes a ported short runner but is pricey and not as effective. SSR makes one also that is less costly.
That's it for now.