Ok here's a picture for comparison of the filler pipes for hatch / sedan tanks.

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End result - couldn't use the sedan fuel tank, the hatch tank had plenty of rust so had to clean it down to metal and re-paint.

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Also - swapped the springs over from the sedan shocks to the hb, coilover sleeves. Damn sedan looks like its in 4wd mode now lol

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And thats where im at now. Small update, but i only had weekends to work on this as im away for most of the week out of Sydney.