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TR4/4A TR3A and TR4A clutch pressure plate...Difference?

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3 has a three finger setup whereas 4A is a diaphram type plate. Because of this the input shaft cover on the gearbox is also a different length. They are not swapable without a mod to this part. Also the mounting bolt on the plate are spaced differently.

Easy swap? No.

Can it be done? Yes.
 
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