I've got this document - there are only guidelines about safety etc, more important for equipment less for installation.. . Anyway – it’s better to read that than to do something without reading it.
Another thing that bothers me is that I’ve always had toroidal tank and I am bit concerned where to place cylindrical one. First thing is safety – what will happened if there will be an accident. Will it not be released from the straps? Ive seen a car (Polo) with small tank (ca 40l) after an accident at about 30-40 MPH. 70% of the thread length in strap was cut. I know about the gas safety so I am a dummy which thinks that I will blow someday or will poison me. I just want to know if these straps are strong enough or is it safer to put enforcement around the tank.
Second thing – if I want to put it along the car, will it not affect stability of the car and suspension durability? One side will be ballasted permanently. I could put one big tank behind the seats but don’t want to lose space (to take stuff from IKEA for example

) Another idea is to put tank, half size the big one and get half of the folded seats.
What do you think? Any ideas of how to save some space?