1991 Toyota Corolla fuel filter

Jack the car up, put some jackstands under it, remove the drivers side stone shield and tire.
Look through the wheel well and you will see it.
The lower connection is a double inverted flare (like a brake connection) while the upper is a banjo bolt (with upper and lower cooper washers).

You will have to remove the intake piping to the TB and the charcoal canister to get to it.
Be carefull with the lower connection, do not crossthread it.
Some Toyota's use banjo bolts on both ends, but I don't thisk this year does.