if you can get a decent tranny from a low mileage gtp i don't think you'll need to upgrade it, but did I say that you'll need a new exhaust a minimum of 2,5 in with dual mufflers... also you'll need to get it reprogrammed with hptuner or dhp...
you'll need to upgrade the fuel pump...
you'll have to get rid of the dtc that affects performance...
also did I say that none of your stock gauges will work ??
and new custom axles or fit gtp hub or buy the (milzy, not sure) ones...
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