I think It flows way better than the stock lower .When you compare them side by side,,BIG DIFFERENCE!!!!!I actually got a great deal on mine it was advertised as a lower intake for a 302, But did not say for what, As soon as I saw it I went for it bought it for 20 bucks... Plus 6 dollars shipping it came with the fuel lines which You don't need if you put it on your mustang,,But It does fit My systemax top.. so basically I have a spare one , unless I polish it and sell it back on ebay or something...
So the truck 302 lower does fit the systemax upper? If so I may have something to do this weekend. Does it have the ect and act bosses in the same location as the stock lower? I do have the lower and a horribly dirty systemax upper at my brothers house if it will work. Never thought to check.
Yes all the sensors are in the same locations. Egr may not work since they have the valve with the flex tube coming off the lower up to the upper right by the throttle body. I don't think the Egr coolant line is there for the truck lower in the back.. but I could be wrong.