This a DIY version of the Quaife Type 9 top cover that I first saw on Guy Lowe's gearbox. It makes it much easier to check and top up the gearbox oil level. It's a simple access hole through the top of the case made with plumbing fittings. The exact parts don't matter, I couldn't get the same parts Guy used so I improvised. The olive is not used, the nut is simply to hold the coupler in place. It's a good idea to Loctite or lockwire the nut in place. Access is still a bit restricted on
