On the knock-off lower control arms, most don't add/subtract anything over factory, and tubular is way stronger. Deflection is your enemy.
As mentioned before, just be sure to change the ball joints.
The only other difference would be the del-alum bushings, and those you can buy separately and change out if you choose.
On the 442, I just ran the poly bushings that came in the arms, no 'problem'.
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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
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1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
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