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im having my 4l60e rebuilt do these trannys have different gears i dnt want to install the wrong gears and slow the car down.im also blowing thru the converter on the dyno do i need to get a smaller stall or does someone make a tighter 3200 converter.if my car has always been blowing thru the converter will i be any faster at the track

All 700R4's, 4L60E's, & 4L65E's come with a 3.06 first, 1.63 second, 1.00 third, & .070 fourth.