i have my upper and lower manifolds off to replace a valve cover and i kinda want to do something else while im in there.. i have an 03 with vortech. already have a plenum spacer what does everyone recommend i add? im not looking to spend a ton of money or get really deep into the motor right now.. let me know your suggestions with prices and why you think i should.

 

Go to return fuel system if you ever decide to make big power.Price depends on were you look and the quality of the system you buy.Also you could port match the lower plenum for max flow of your stock intake system.

 

You could coat the manifolds while you have them off for pretty cheap too.

 

Do nothing, it takes 20min max to take them off. So there is no big deal they are off. There is no mod worth your time to go get a the time. Port and polish does not do much.. Hell I lost 40hp going from a Cosworth to a port and ploished oem plenum. Take it from me I have spent the $$$$. Just enjoy your car and when your ready to go big then spend your $$$$. Thats my recommendation.