The SPF street GT40s have sturdy steel self-contained gas tanks inside the original design side sills(which are of sturdy steel ribbed design themselves) which the original GT40 race cars did not have. While the SPF GT40 street car fuel tanks don't have ballistic fuel cell bladders the SPF GT40 track racecars do, they appear capable of withstanding even severe impacts and should be much safer than the original cars that placed fuel bags inside the side sills alone.
I have several racecars that use fuel cells, and I personally prefer the steel tank within the steel side sill arrangement of my SPF Mk1 street car. Fuel cells are expensive, prone to leaks, and a PITA to work on and change. For a street car, the SPF arrangement is safe and the best overall compromise IMHO.
Jack
I have several racecars that use fuel cells, and I personally prefer the steel tank within the steel side sill arrangement of my SPF Mk1 street car. Fuel cells are expensive, prone to leaks, and a PITA to work on and change. For a street car, the SPF arrangement is safe and the best overall compromise IMHO.
Jack