Originally Posted by 1slow01Z71

Allen already has tune files on hand of whatever setup he could possibly run with the radix on the 5.3 so its not like he is just taking a guess he knows his ****. His mail order tune was only .01 second slower in the 1/4 than pcmforless's tune that was done IN PERSON so he knows his stuff. The dynatech headers are going to be worth more than your headers due to being a true long tube header. Also he is going to pulley for its just a known fact that he will once you start doing that you need a custom tune not to mention allens tune can give him 40rwhp with just the tune add to that 20ish on the low side from the headers you got 60rwhp and if you put a cam in it wont run off the magnacharger tune he will need a custom tune. You gotta crawl before you can walk