I had been eyeing this Kingston RAM, but it doesn't say anything about CL2 (2-2-2):
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110523542421&ssPageName=ADME:X:AAQ:US:1123#ht_17312wt_1413
I wrote the seller to confirm.
As to the ROM and VIDEO issues you mentioned, I am not seeing anything about "video problems" in the Sonnet Product FAQ:
http://www.sonnettech.com/support/kb/kb.php?cat=364&expand=_a1_a3_a2_b75_b234&action=a1#a1
You'll also note that even though the FAQ and Manual are on that page, there is nothing in the "Firmware" section. Since Sonnet doesn't support this upgrade card anymore (and certainly won't do a ROM upgrade for it), I am not sure if the card is worth the risk. I might be paying for "a brick" as you say.