All of you have very good points. I have been in the auto-body field for over 17 years, and am a 3rd generation in this field as well. I, nor my elders have never seen a in-cab tank explode from a collision, but it is not unheard of either. It's really a matter of your own needs, opinion, and modifications. I do know of a incident where the fumes overwhelmed a driver into blacking out, crossing the center line and into a oncoming car, but no BOOM!!! lol. I will also say that today's safety standards do make a difference in fatalities, and injuries and they do recommend relocating the fuel cell to the outside of the cab. I also understand the originality of keeping it in the original place, so again, it's all in your own preferences