I just bought an 84 New Horizon and not sure the fuel gauge works. Does anyone know what the normal size is on this and the expected mpg. The 22R was rebuilt with larger cylinders to accommodate a 5th gear. So mileage is less than normal, maybe around 12 or 13 mpg. Another complication is the dash cluster was installed from a newer Toyota to have better gauges so my odometer is reading not accurate. Anyhoo, mainly want to know what the tank capacity is. Thanks