[ChevyGuy]

I have no issues with my reception.

Same here. It's better than my old car.

One minor word of warning - too good of an antenna can make things worse - local stations will over power the radio and then you can't hear the station you want. So you need to assess if the problem is if the signal is too weak or if the local stations are overpowering what you want. The clue of "too powerful" is when the same station appears in multiple places.

 

[ChevyGuy]

1/4, 1/2, 3/8, 5/8 wave are all popular sizes. Even then, the electrical size can be changed by adding a coil to it.

100MHz is 3m so a 1/4 wave is 2.4 ft - kinda long to put on top of a car.

Generally, a "stubby" isn't going to help. But like a lot of things in life, what works best is based on a number of factors - including how well designed and built it is.

 

[ChevyGuy]

I would assume then any increase in antenna length could possibly improve reception?

If you're going to qualify it like that - sure! It could. It's worth a try. Likewise an amplified antenna could improve things as well (if you can find one that fits.) Then again, an amplifier can make things worse. It depends on how strong the local stations are and if the amplifier has a better noise figure then the radio.

 

[ChevyGuy]

why not put an upright quarter wave antenna on the right front fender and be done with it? Worked well for decades on just about every make and model car and truck built in the USA.

Works? Yes. Stylin'? It's so un-European....