Trunk Firewall pics.

I was just wondering if anyone has any trunk firewall pictures. Im wanting to
make one and i was just wondering if anyone has any pics or info on how they constructed theirs. I was going to make a card board template and just trace it onto a sheet of aluminum or steel and cut it out and install it with some liquid nail. Anyone have any idea's on how to actually fasten it to the car? The reason i want one is i will be installing a fuel cell shortly and i don't want any fumes getting into my car. Thanks for any pics, info. etc.

~Matt~

No one has any info on this? Im talking about a firewall between the trunk and the driver compartment in a notch back. I could use some input to make sure i do this right, pictures could help me alot but arn't absoblutly needed.