04-29-2020, 11:34 AM
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Senior Member
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Join Date: Mar 2017
Location: ABQ, New Mexico
Posts: 36,633
Thanks: 3,506
Thanked 136,542 Times in 22,784 Posts
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Ford wanted to use the brand new Goodyear F60 series tires on both the Boss 429 and the Boss 302. Initial testing showed that standard Mustang spindles were not up to the challenge of the much wider (read: better gripping) tires so heavy duty spindles had to be made. Testing also showed that the shock towers were pulling apart from the body due to the F60s so they had to be reinforced.
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