well, just to follow up with my situation. even taking the plastic plate out, 50mm are still a tad too short. the bolt won't go all the way through the nut. i had to go with #10 bolts that are long enough. they are a bit thin but seems to hold well enough for now. i'm still gonna search for some 60mm bolts. by the way, it feels great!!!!

01 Black Honda S2000 99 svt Tred/tan #2394 of 2760 on July 29, 1999 *SOLD*