Where can I get these mods?
 

I just recently purchased a 5.0 and want to start the modification process. Where can I get a good intake manifold, heads, & underdrive pulleys?

Edelbrock is always a good place.

classified ads on other websites for used parts.

Cheap used good parts for the win!

ebay is the way to go for everything if you know what ur doing on ur car

Ebay is a good place to start looking, but there are also A LOT of mustang sites on the internet. Look around, i know i've seen plent for mainly 5.0 mustangs.

ebay is dangerous. stick with known distributors and sites where you have some sense of community. At least that'll keep the risk level down.

Check out your local craigslist.org auto parts section. There's usually great deals to be had for used stuff and you get to look up close before you buy.