The casting marks/letters are batch indicators & have no bearing on the profile of the cam.
Dean was right in the 1st reply, you purchased 89~91 B16A camshafts.
The link given is a very acurate way of checking which cam you have.
Use 90LAN's EK9 CTR cams as an example, check the tails & they are exactly as they should be per the link.
You need to know what you're buying before you buy it, particularly if you're buying 2nd hand parts.
What's the saying? Caveat emptor... Let the buyer beware. This common sence dates back at least to 1515AD, or approx 496 years.
Anyway, you aught to see about returning the parts & getting arefund as they are not what you paid for.
When you set about getting another set, they're the ones on the left.
CTR's are the best OEM cams & are also found in 00+ AUDM DC2R's
Sorry to hear you got stooged.
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