Originally Posted by Quik now im used to lsx knowledge but last i checked shorties for fords are 1 5/8s? are these the size your running? i would hope you have 1 3/4 primaries No clue, what ever the junk FMS shorties are. Find me some 351 swap headers for 40 bucks that will be more suited to my combo and I will buy them. Later Jason
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