changing a rear end w/Sure Grip question

[Andy Grow <sixtyfourmopar@xxxxxxxxx>]

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One thing I'm don't have a lot of knowledge about is the rear axle, but I'm learning every day.  My 64 Polara has 2.76:1 gear ratio w/the SureGrip from the factory.
 
If I bought some new 3.73:1 ratio gears, can I just swap 'em out, and does the Sure Grip stay in the car, or do I need something new?  Are they seperate parts (the sure grip and the actual gears) or is it all one assembly?
 
Thanks!


Andy
64 Dodge Polara 500
		
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