Boosting 88-94 antenna?

[Daly]

I'm looking to boost the reception in my 91 C2500. I have the factory radio and really don't want to swap to a newer radio, I like the way the interior looks stock. But there are some stations that I get in my other vehicles that I can't get in the C2500. Is there anyway to boost the antenna?

 

[laidbackbigun]

JC Whitney used to sell a fm antenna booster that was powered by 12v. you wired it up to positive and and ground and it went inline with antenna cable. i haven't seen one in almost a decade though. i know im not much help but they used to make things for that.