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**mr48chev** · 05-28-2010, 07:46 PM

Yep, having or lacking those ribs is one of the identifying signs of what year the cab actually is.
The break must be between 49 and 50 as I have a 49 cab with the flat firewall and a 51 and a 53 cab with the ribs.

The 49

The 53

05-28-2010, 07:46 PM	#3
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,817	Re: I noticed something yesterday Yep, having or lacking those ribs is one of the identifying signs of what year the cab actually is. The break must be between 49 and 50 as I have a 49 cab with the flat firewall and a 51 and a 53 cab with the ribs. The 49 The 53 Last edited by mr48chev; 05-28-2010 at 08:06 PM.