The only difference between the GE and GZE sumps is the connection on the side for the oil cooler return pipe
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- the actual sump itself is identical, including the number of bolts fixing it to the block.
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Try removing the cover plate off the bottom of the bellhousing
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( 3 or 4 bolts IIRC
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) to get at the last two on that end of the sump.
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And yes, that applies to the AE101 GZE too
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- my track car has an AE101 GZE, but with a GE sump fitted to keep the oil cooler