I have the same setup yet to be installed. You will also need SVT Fuel Pump and some Autolite 103s spark plugs and subframe connectors. With aftercooler you should be close to 380-390 with at good tune as aftercooler is good for 25-35 rwhparound 10 psi. That is what I am shooting for. If you wanted to hit the 400 mark go with a catted mid pipe you will gain 15 rwhp. (2 cats is better than 4 and more freeflowing) I am thinking about adding a mid pipe so I can definitely hit the 400 RWP.

 

yeah i've got the SVT Focus fuel pump and 42# injectors coming in the mail already. i just did a tuneup on my car about 2 months ago, i wish i had known then that i was going to be going f/i cause i put Autolite 104 plugs, but changing those out is no big deal.

 

the svt focus pump did not cut it for me I was hitting a lean spike at wot around 5800. added a kb boost a pump to fix the problem. one step colder plugs set .035 will work great