In another thread jura posted that the 335 and JB's PJ dunlop were from the same mold. http://tt.tennis-warehouse.com/showthread.php?t=101420&page=4 I have one of JB's paint job 300g's and I just got a 335 today. They seem to be exact matches. I took a couple of pics (sorry, my camera is excellent but i suck at taking really good pics. the glossy finish on the 335 doesn't help either) http://home.cogeco.ca/~cheeky/DSC03896.JPG http://home.cogeco.ca/~cheeky/DSC03897.JPG The racquets are the same shape, length and diameter. beam width is identical at 20mm. beam length (is that the right term?) is 9mm. the measurements of the head sizes (between 3/9 and 6/12) are off by 1mm due to the 335 being strung and the JB 300g not strung. I can't compare weight and balance because the JB 300g is customized with lead and the 2 racquets compisitions are likely completely different. That being said the 335 ra of 66 is 1 ra off the 300g ra of 67.