Rear band questions

Creedmoor said

Not Redline, re-lined. If a double wrap is the way to go, why? A re-lined double wrap is $37 vs. a new Raybestos double wrap for $64

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http://www.allpar.com/mopar/transmissions/torqueflite-tom-hand.html

"The 904 uses two different types of low-reverse bands. One type is called a double wrap band, similar to the Hemi kickdown band; it is used with the V8 engines to give greater low-reverse drum holding capability. The other band is a single width band that has less torque holding capacity and is used with six-cylinder engines. The 727’s single width low-reverse band and is used with all engines."