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EagleMark
01-31-2013, 05:16 AM
1998 EFI Live Tune Files
Lextech
01-31-2013, 06:11 AM
Here is a 98 GMT400 5.7

Jeff
bmc10258
03-19-2013, 07:04 PM
98 K2500 5.7 4L80E Chevy with 8600GVW