Bolt-on performance for an injected 302?

[D73]

Hi all,

I've had my Mustang for about four months now and love driving it, but there may come a point when I want to race it (National Street Car Championship's tempting). What are the best bolt-on mods for an injected 302? Car's a 1990 GT, absolutely stock as far as I know. Don't want to pull the engine and don't want to do anything that'll have it off the road for more than a couple of days at this stage.

Cheers,

Anth.