I figured we can have a thread where we can talk about retrofits, without clogging up other threads. We can post questions, pictures, or anything related to retrofits. I also compiled a few of them. If you have/know any threads that will help with retrofits, let me know. I'll do my best to update this.
The Retrofit Source Ongoing GB via Andrew
How to: Retrofit Morimoto FX-R & Mini H1 by A7xschecter661
How to Install Ambiguous Retrofit by thegreatwall 23
Retrofit Service by Ambiguous
Retrofit Service by AsianAnts