The 6-cylinder SLs were dropped from the US lineup in 1998, leaving just the V8 and V12. wiki had no numbers.
I had checked Wiki also. This seems to be really elusive. There must be records somewhere!
Looking for a Used SL-Class in your area?
CarGurus has 3,211 nationwide SL-Class listings starting at $4,930.
Search Mercedes-Benz SL-Class Questions
Mercedes-Benz SL-Class Experts
Related Models For Sale
Used Cars For Sale