E85 vs. SFI
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E85 vs. SFI
I am looking at a 2009 gmc sierra RCSB that i might purchase. I dont know what 5.3 i should get, the SFI or the Flex Fuel SFI. Is there a big difference between the two. I wish GM offered the 6.2L in the RCSB trucks. It would make that truck so performance worthy. But otherwise, if i was gonna go with a choice, what would you all choose. It will be modded as well, so i gotta put that in the factor. thanks for the input
cory
cory
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