They'll tell you 20 gallons if you filled it to the top of the pump mount, but if you filled it to the top of the tank you can probably get closer to 25 gallons topped it off.
What a great Father's Day gift, Steven.Best day ever. 18 years ago November I took delivery of my roadster thinking my two young teenage boys and I would build it. After a few weekends in the garage they grew impatient when the car wasn't going together as quickly as they thought it would, so I shelved the car so I could participate with them in scouts, karate, youth group, mountain biking, etc, and I have absolutely no regrets. Life has taken many twists, all good, but hasn't left a whole lot of time for the car.
Now the best day ever part. My oldest son who is married and has 2 little girls wants to come over one weekend morning a week to help me finish the car. He needs a break from all the estrogen and needs some man time. Sunday was the 1st day and I am now reliving my original dream of 18 years ago. Lots of time with my oldest son, and the roadster is progressing. Best day(s) ever.