Just did a custom undertail last week and it turned out pretty good. It was a lot of dicking around to get the fit just right but well worth the time. Heres the guide I followed CBRWorld.net - Homemade Fender Eliminator F4i
I used 26 gauge steel instead for the main plate as it's much easier to cut and manipulate compared to 22g. I could do all the cuts with aluminum snips. For the brackets though I used 22g.

 

Man, that looks nice! Ill pay you $50 to make and ship that to me!

 

where did you get those turn signals. Are they very bright?

 

Sliiiick. I'm going to try this in the next day or two.

 

Very nice... I, too, followed this guide and used rivets vs nuts/bolts...

Only difference being that I converted to a 954RR taillight in the process

 

+1

id buy one. i just have my current fender dremeled down. its ok, but this would look way better but i dont have the tools required

 

I bet you could cut the metal with a Dremel disc pocfoo. I'll let you know, I plan to try tomorrow or Saturday

 

I got them from Royal Distributing ( Canadian store) but there MotoLED 602's. $37. And ya their very bright.

That's sweet any pics?

The tools you need at not expensive man. Snips are around $10 and a riveter is probably $15. I did all the cutting with these:

 

Back (Original/Temp Tag Bracket):


Side: (New Tag Bracket)

 

Looks solid man.