[Joe67]

Originally Posted by 1971ChevyTruck

I think there is some misunderstanding...a stock tank Measures 59 3/8 inches x 7 1/4 inches x 16 3/4 inches....so this is the same size....I made a mock tank up and I can have the stock bench seat back....I'll send picks when I'm done.....As for stock tanks not giving off fumes I have been in several trucks and in the summerime most give off some fumes---thats why people are taking the tanks out from behind the seats and putting them in the frame.

I see, so the space won't be an issue

I never had fumes in my '67 before I tore it down. A properly functioning OEM setup should have no fumes inside the cab.

Personally, I moved my tank to gain a little legroom and to remove the big old fill tube from the side of the cab.