Your 5 speed has gone to the gearbox heaven where a lot of 5 speed's live my old one included. When mine let go it went bang then couldn't select 2nd,3rd,4th or 5th could get 1st but had to turn engine off to get it and the same for reverse and car would bunny hop due to shredded teeth in the gearbox.

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race tape y pipe running .05 bar till spares turn up.