Check this out: retrofixes.com
Have you heard of retrofixes.com? Searching on the web one day, I came across something unusual and noteworthy. Unusual because I noticed a high level of sophistication and attention to detail concerning retrogaming. Retrofixes.com is all about console modification with a focus on preservation. 
The owner, Wes Almond (cool name, right?) says this about his work:
"I offer many new upgrade kits and restoration services for vintage consoles. Most services focus on removing the obsolete RF coax connection for composite or svideo. Newer higher end mods are HDMI or RGB video outputs for NES, SNES, N64 etc. My restored consoles have been featured in Museums (Art and Giant Robot exhibit- Oakland Museum of California) and one is currently in the Nintendo of America building"
Pop over to retrofixes.com to find some unique and excellent products and services relating to retro gaming.