Among other guages that I have bought. I have an oppertunity to get a 5 bar oil pressure guage really cheap. This seams like a neat little guage, excpet for the rumor I heard about changing the oil presurre sending unit out? (I think that I reffered to it correctly--not shure) Anyway, is this a hard thing to swapout. I would be taking it from either an 84 or 85 dl in the junkyard? Will I be asking for leaks by doing this type of thing? What tools should I take with me tommorw? Thanks and happy bricking!