What kinda tranny is this? Please help!!

Many of the T5's used the same castings and external parts. The only way to accurately identify a T5 is by the aluminum tag screwed down under one of the tailshaft housing bolts.

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Look at the chart. The 4 cylinder T5 does have a smaller input shaft. It may require either a V8 input shaft to do a side by side visual comparison or a mike or dial caliper to measure it.