I got tired of the 13.8 in my 83 short bed, got a tank from toyotaboy with some EFI stuff.
I was told that it came from a 86 "1 ton" toy pick up.
had to move a few things butt got it in, went to fill it and DANG! 20 gallons.
now with my ax. tank in the bed I gots 37 gallons to get my and my tralier down the road.
Sorry, point is there are 20 gallon toy efi tanks out there.
mite just bolt into your runner.