Originally Posted by
spindlehead
I just can't see the new generation groupset impressing a non-pro rider that much.
I think personalizing your bike is a great thing. Repurposing something into being useful again is a noble cause and you should go for it. One bit of advice, your 105 groupset, unless damaged, is a good system - i dont think replacing it with a new 105 set would be much of an improvement, more like a lateral shift at best. You should try for the next level up, or just shoot for the moon and get the setup you really want and put it on.
Do your research and make sure all the new shiny goodies will fit, have fun doing your upgrade project and enjoy your refurbished bike when its done.
You will notice a difference because you put in the effort and wrench time and your bike wont be a boring off the shelf object anyone can buy.