weird.. I thought that all 300CE's in The US as of 1990 had the M104 24V Engine.
When I was looking to buy a 300CE, every car that I saw that was 1990 and up was the M104 24V Engine.
The only cars That I know of that still had the M103 after 1990 was the 300E, which also had the 2.8 and the m104 24v engines as options as well.
But you may be right on this one Adam, Though I havent seen any M103 300CE's in Los Angeles that were made in 1990 - 1993. I have seen them in 1987-1989 300ce's though...
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.