What type fuel cell is BEST to use?

[PA-IndianRider]

Little by little the El Camino" I bought last Fall to be used as a daily driver is becoming more of a hot rod project (street/strip) than I originally planned when I purchased it.

As many of you know I am ditching the V6 - three speed manual tranny for a built up/bored 350 - 4 bolt (400+ hp) 4 speed, etc, etc.

My latest plan is to replace the stock gas tank (which is seriously dented-in) with a FUEL CELL which will be mounted in the bed along with a fuel delivery system (electric fuel pump, filter, etc) and battery box.

For my application (street/strip).... which type of FUEL CELL would be best to use? A vinyl or aluminum one?

I have been looking at them on eBay and noticed that some of the vinyl fuel cells have "foam" inside them. Does the "foam" make those fuel cells more desireable than the ones that do not have "foam"??? Or is an aluminum fuel cell better to use than the vinyl ones??? I have seem BOTH of them used... so what would you recommend??? Thanks.