You could move the tank to the rear, behind the rear axle. I installed a NASCAR-type fuel cell in a friend's 66 Mustang because he was a little spooked by the stories of rear end wreck fires, and there are several sizes of them that can be adapted to the S-10 frame easily. They're also fairly inexpensive.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!