hello all. i'm new here. recently acquired a 1991 samurai. it has the stock 1.3 FI engine. the only thing i have done so far is put a stater relay on it and i have ordered a doug thorley header but not installed yet. my problem is that the tempurature gauge is not working. i installed a new sending unit but that did not fix the problem. i bought a temperature gauge at the parts store but the sending unit that screws into the manifold is way too big for the samurai. is there an aftermarket gauge that will fit? will this mess up anything as far as my computer, FI, etc. if i install an aftermarket gauge? thanks in advance for any help.