I need to replace the oil pressure sender on my '76; I found a very nice picture of the location, rear of the intake manifold, but of course the picture is of a block out of the engine and without the Spica attached. Back in the real world, it's tough to get to, surrounded by hoses, and from what I can see there isn't a wrench point (although I read there is a place for a very thin 14mm wrench). Any suggestions for removal? I imagine this has been there since the car was new. I couldn't find anything in a search of the forum.