Has anyone put a 4.6 in a 1967 mustang
the suspension load is still mainly on the frame rails, with or without shock towers, the ONLY substantial metal in the original shock tower setup goes straight down to the rail...the same load path a mustang II setup takes, the ONLY difference between the two setups is triangulation provided by the export brace that the mustang II setup lacks...which in effect connects the firewall to the frame rails via the shock towers....if you use a mustang II front suspension you can add in this missing support simply by running some roll cage tubing on the outside(or inside, but outside provides a cleaner engine bay)of the fender aprons from firewall area up under the apron at the original shock tower location, then down to the frame rail...this will tie them together...then fr a it of extra stiffening(at this point better than stock) would be to add an export brace(custom)that ties into the tubing where it runs under the fender aprons
in effect...a mustang II setup without additional bracing is about the same as a stock setup without an export brace...or rather a bit stronger...since the massive crossmember ties the frame rails together much better than the stocker which is small and bolt-in
p.s. I dont really think people can give an honest opinion on a MII chasis strength setup vs stock unless they have performed the install, otherwise its just second hand info
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66 mustang coupe,Heidts Mustang II front end 4.6L DOHC mod motor, T45 transmission, 8.8" disc rear end, twin turbo system in progress, and a ton of other crap
'86 Mustang SVO, rustbucket undergoing mild restoration
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