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Old 12-09-2013, 03:26 PM   #3
hrpiii
AKA "Beefcake"
 
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Drives: 2023 ZL1 Sharkskin
Join Date: Oct 2009
Location: Indy
Posts: 8,573
the L99 is basically an LS3 with the AFM/DOD mods on the internals. You can easily convert the L99 to the LS3 and keep the auto. It's really not "two" different engines because what ever mods you can do to the Manual, you can do to the Auto.
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