I wonder if GM recently raising the factory warranty had anything to do with your better deal. I bought my car in 05 with 9K miles. My warranty goes to 84K miles and/or year 2010.

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04 Indy SS build #972
XP, TOG's, Lightning injectors, 2.8 pulley, 105 CC springs, Wizaired, 3.29 gears, tripleedgeperformance ported blower, machined LIM, 180* tstat, RS12YC@.053, FP rewire, Alt rewire, stage 1 V boost, PRJ wires, Stage 2 IC