grab a seat from a modern commodore wagon there seats belts and seats are all in one i will post a link of ones i seen for sale recently

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this guy had a seat for sale contact him

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http://www.ebay.com.au/csc/tee-tree_...=p3911.c0.m283

Or these will fit too
http://www.ebay.com.au/itm/Rear-Benc...item4600ee24f9