Can you add a speedometer to a 1995 Seadoo SP? There is a spot molded into the hood cover where a gauge can be located (at least I think that is what it is for). Right now it is filled with a circular plastic Seadoo logo piece. Anyway, can a gauge go in this and if so can it be a small speedometer? Is it a pain to install an aftermarket speedometer gauge and pickup on a jetski? Thanks for any information.