1969 20' 40gal fuel tank under console ques.

[Vezo, Part II]

Welcome to CSC!!! I have a friend here in HHI with a 20 of same era, and his was completely redone locally. Old Merc 200 as well, though he has recently upgraded. You will require a custom built aluminum tank fabricated to "stuff" under/inside the foot print of the large center consul, and most likely a vent out the side of the consul. Then you will have to decide if you want the fill located on top or side of consul. Once you know max length and width of space, you will determine overall height of tank, to determine how many gallons you would like to carry, i.e lower tank height may provide additional space for life preservers, etc.

I believe the formula for calculating gallonage (liquid) is LxWxHx .123, but you can google it to confirm. Once you determine that, you may consider a similarly shaped, capacity of a plastic (ethanol compliant) Moeller tank.

Aluminum tank builders are:
RDS of Perry, Florida.
Sunshine Tanks of South Florida (original builder of early SeaCrafts and Fossil Man is a member here and a (family member or employee)). Shipping is the killer.
I have been to a Coast Guard certified builder on James Island...

Hope this helps. There a quite a few members here in the Charleston area.

Vezo, Part II

P.S. A rough estimate should be @ $7.50/gallon, plus coating of your choice (coal tar epoxy seems most popular), plus shipping.