supratreo
+1y
i'm glad you asked this, i've been wondering this for a while.
i was thinking about making a thread to see if anyone had done dual tanks but i guess i wont now, haha.
i've looked around a lot and can't seem to find a bigger replacement and what makes it harder is that is different sizes (standard cab, ex cab, LB, SB...)
custom might be the only way to go but that would be expensive. fuel cell might work but i don't want to loose my spare.
i'm not sure how the dual tanks worked on the chevys but i was thinking you could use a transfer pump from one tank to the other so when the main tank is empty you just transfer more fuel to it. i'm just not sure how you would fill or vent the aux. tanks.