I actually changed out the wheel hub and bearings and put extended wheel studs, sorry I should of mentioned it earlier. The only reason why I want the Seibon fenders, is because the air ducts would really compliment the look I'm trying to achieve. I made a mistake by buying the wheels before the car is finished, but I do love Lm's.

 

You could always reverse mount the face of the wheel. That would lower the offset about 15mm in which case you probably would want the body mods listed in your first post. It sounds like you have a couple options to get the look you want.

 

If you have the extended studs you have options. The 10mm spacer will work or look into reverse mounting the face. LM's have a lot of customizability since they are multi piece wheels.