[962porsche]

you can place a fuel cell in the passenger area but it has to covered by a bulkhead on all sides.
how ever this car in question could not have a logbook so it's not a wheel to wheel raced car !
as for placing fuel cells in that location it is done and done allot . in my shop we just did it with a MGB historics car and by the rules had to be covered by a metal bulk head on all sides . the metal box it comes in is not a bulkhead . the other thing is with most classes if you do not have a passenger seat you have to have a petty bar .
personally i'm not one to cut a door to clear door bars then add more weight back in by making new inner door panels .
also with some classes you have to retain the stock side impact beam in the doors with other if you use nascar door bars you can remove them .
when it comes to cutting out the inner door you can cut as much as you need to to clear the door bars . but again look to the rules of the class your looking to run in .
when it comes to building a cage read the rules for the class ! most rules will state all bars have to be one continues run . this would be not having any seamed or welded together bars to make up a run .
because of this if this car in question came into my shop to go thru the tech inspection i may not pass the cage to be signed off for it's log book as there is a slip joint on the door bars.
what does the gt40 of the 60's have to do with the type and placement of a fuel cell were the seat used to be ? nothing at all as the gt40's had two fuel cells in the side pods inclosed by steel on all sides no fuel was in the drivers area . then look at the rules for racing back then or i should say the lac of safety and rules .