Dougs D453 headers went in ti my 70 Dart yesterday....

sabre67 said

My car is a power steering box I believe the manual box has a laeger input shaft.

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When I converted my 68 Coronet 383 4 spd car to Manual ( Whhaaa, I Miss Her!!) It was the same. And my Brother Tugboat elongated the shaft, w/o any adapters. There is collapsible plastic pins in them. DO NOT DO THIS. Disclaimer... for Real