Hello all, I have a 1978 pickup and the fuel sending unit is no longer working. It either reads full right after filling up or empty after a gallon or two have been used. I am unable to find a new sending unit. I have only found universal units. Has anyone used these universal units? I found a sending unit on eBay for a 72-78 FJ. Is this the same unit? I know that many parts back then were the same for FJs and pickups. Any info here would be appreciated! Thanks!