If you can find one, a 58 only, Pontiac housing has the same lower control arm mounts as an A body, the upper control arms mounts will need fabricated. Since this was the year before Wide Track came about, the track width was close to the stock factory 8.2 width. It was a popular swap back in the 60s/70s to replace the rather weak 8.2 that the factory used with fairly minor fabrication.
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Brad Yost
1973 T/A (SOLD)
2005 GTO
1984 Grand Prix
100% Pontiacs in my driveway!!! What's in your driveway?
If you don't take some of the RACETRACK home with you, Ya got cheated 
  
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