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**N2TRUX** · 07-01-2010, 09:43 AM

I am more familiar with 73-87's but the 67-72 have a very similar front frame. Considering they offered a 4x4 Burb in 72, my gess is they made the frame capable of going either way.

07-01-2010, 09:43 AM	#4
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: swapping from 2x4 to 4x4 I am more familiar with 73-87's but the 67-72 have a very similar front frame. Considering they offered a 4x4 Burb in 72, my gess is they made the frame capable of going either way. __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"