E, * I have an '88 also. * The tank measures 15-3/4" from the top surface (mounting flange surface) to the bottom of the tank. * I purchased a gauge from these people - *a little more expensive - *but the reports are very good on these units. * I havent installed mine yet. * It is a stationary vertical rod (hence the tank depth is very important) with a floating puck that moves up and down on the rod with the gas level. *
http://www.wemausa.com