My 71 has the brackets welded to the frame rail while I have seen later bars with bolt on brackets. Maybe that is the difference? The bolt on bracket decreases the space available for the drop link so it uses a shorter link??
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71 Formula 433, Splayed cap 400 block, 4" stroke Scat forged crank, 6.8 Eagle rods, custom Autotec pistons. SD 295 KRE D ports, Old faithful hybrid roller, Torker II, Holley Sniper Stealth, Tribal Tubes, TKO 600, 3.73 Eaton posi.
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