they are adjustable..the side pieces slide back and forth... once you get it installed and lined up, you need to tack weld the sides in... no biggie, you can drive it without them welded, but it will wear through sooner or later...
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84 convt,'95 302,AFR's, performer
3.55's, underdrives BBK shorties
stock cam, 1.7's
13.85@102.5
and a '68 stang that WAS nasty ;-)
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