The tale I tell you today, is a tale of ancient, ancient, ancient, ancient, ancient, ancient, ancient, ancient, ancient history.
A young man ordered a lightweight flywheel from Amazon only to find they incorrectly showed it as fitting a D series motor. Dismayed, he turned to Real Street in Orlando for his lightweight flywheel for his d series motor. He assumed fitment would be universal like B series motors. He was wrong. Dead wrong. He ordered an Exedy replacement clutch kit from his shops supplier for a 1989 CRX, the car he has. It did not fit. He read that the 90 has a different diameter so he ordered a clutch kit for a 1990 CRX. They sent him the wrong one. He went to Autozone and kept trying clutch kits till he found one that worked. It was listed as being for a 1998 civic which is weird because he thought 90-2000 was a universal fit. 5 days and 5 clutch kits later it's finally in the car. Ugh.