manual steering box ID
You need to find out if it's big or small pinion spline. I believe Moparts or Big Block Dart has a tech section. I've read you can tell by looking at the top plate
http://www.forabodiesonly.com/mopar/showthread.php?t=68591
http://www.forabodiesonly.com/mopar/showthread.php?t=98910
http://www.bigblockdart.com/techpages/techindex.shtml
http://www.bigblockdart.com/techpages/steeringbox.shtml
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