How hard is it to retrofit the newer dif gear ratios on the TT4/ABS trucks (read 2003) into a 1999 or 2000 TT4/ABS truck. As I have read here, the issue with the earlier trucks was the ratios in the diffs was too low and was increased in 2002.
And again, thanks for all the insight...
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-HUMMERDOGG
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