@oreo_muncher I'd agree with others changing your group set to 105 will not make you faster.
There are two ways to increase speed. The first is to become stronger and fitter through lots of short, hard rides in which you push yourself as much as possible.
The second possibility is a better bike. This is not to suggest there is anything wrong with your current bike. Once you've improved your strength and fitness you will reach a point whereby the bike is the limiting factor. You will "feel" this point, you'll "know" you have more in you than the bike allows.
I know this is not a view everyone would agree with but have experienced it myself and seen it in others. For example I simply cannot get the same speed out of my winter Dolan that I do from my summer Cervelo.
A lady I ride with is widely recognised by everyone in our club as a fantastic climber. She's 20 years younger than me. I'm OK on hills and we often push each other hard up some major local climbs and were on par, finishing a few seconds apart. She bought a new Trek, overnight her performance jumped ahead. Quite astonishing. On the same climbs she now smashes me by 30-60 seconds, sometimes more. She's also hammering some of our very good male riders of her age.
The time will come but just concentrate on fitness for the moment.