Gents,
I've used all of these guys and more. Trust me when I say I've used them extensively. One that rarely gets mentioned happens to be right here in Michigan; they frequently advertise in the MBCA Star Magazine. They are All-Euro in Royal Oak.
I consistently have found them to be the least costly for all things Bosch (all tune up parts, for example); brake parts including master cylinders, calipers and parts, etc.)and even some suspension parts. They don't deal in 113-specific parts like Miller's or Bud's or K&K, but OEM parts that span across many product lines.
So next time you need some tune up parts, brake parts, Bosch parts, etc.--anything you might go to a "foreign auto parts store" for instead of a dealer, give them a try.
http://www.alleuro.com/They don't have an "on-line" ordering system but they will take your order quickly over the phone and fill it fast as well.
Michael Salemi
1969 280SL
Signal Red w/Black Leather
Restored
