The Myth.
There were 2500 non windowed main 403's built
They came out in the larger cars with the towing packages.
Good luck finding one!
Mondello offers a girdle for 300 bucks that will support your bottom end up to 600hp.
and one for 3000 bucks for one 800hp and up.
You can build the 403 plenty without either just stay under 5000 rpms lol and DO NOT go over a 500 lift cam without buying the girdle
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1979 Trans Am 455 Olds, 2500 stall
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