I was recently looking for some spacers for the rear of my 35d, I have 449 wheels and I just recently added some flares and needed to bring out wheels some more out because they really look sunk in the wheel well specially with the flares installed. So I was shopping around and found this company brand is called DSX not widely known but I took a chance and I must say I have nothing bad to report. I have purchased 25MM spacers for the rear after installation everything is just like stock in terms of driver-ability I have covered 800 miles with these installed, but the look of the car changed for the better stance is much more pronounced than before. DSX spacers are made in Mass, USA (not some chinese knockoff) terms of quality, fitment is top notch, and the price you can not beat this either full set with extended bolts costs $69.89 similar spacers from H&R cost double. Here is a link where I have purchased mine;
http://rover.ebay.com/rover/1/711-53...4AAOSwdhJZd2zB
They come in nice anodized black finish with black bolts, quality finish.
I also thinking of getting either 12mm or 15 for the front which they also carry;
15mm $57.89
http://rover.ebay.com/rover/1/711-53...8AAMXQLs5Rn7GP
12mm $56.98
http://rover.ebay.com/rover/1/711-53...8AAMXQLs5Rn7GP
20MM
http://rover.ebay.com/rover/1/711-53...8AAOSwYVhZd2yc
10mm
http://rover.ebay.com/rover/1/711-53...8AAMXQLs5Rn7GP
5mm
http://rover.ebay.com/rover/1/711-53...oAAOxypthRn67B
Here are some pictures;