at minimum the basic 3.4 pulley setup would have an exhaust upgrade...headers or 3 inch downpipe with a zzp powerlog. colder range plugs (autolight 104's) , a cone intake, like whats on there , and usually a 180 thermostat. . 1.9 rockers would be a sweet bonus.
get rid of the cover , it holds in heat. the stock ac delco plug wire are much more reliable. the intake is fine it's just expensive overkill but will still perform better than stock.
oh and reprogrammed pcm