Just to close thread out ...

Size 49 and size 93 differentiated by different weight (93 is spec'd at 4 pounds heavier - about 8% or so) and slight power differences - same relative percentage ranges for CCAs, etc.

No one had a 93 and Wally World had a 49, so 49 it was ... $65 and it is now installed (zero issues) and working great - had left and right side vents so used the correct one by removing vent from old battery and plugging it in to new one - and, used rubber cap for the off side vent. Forgot had to resync seats-headrest, and the ESP system - once that was done, all lights are out.

While the dealer furnished battery was potentially higher quality, the $100 price differential was the breaking point.

BTW - the battery I removed was built in Oct 2001! The original battery!

__________________
George Stephenson
1991 350 SDL (200K and she ain't bent, yet)
former 2002 E320 4Matic Wagon - good car
former 1985 300 CD - great car
former 1981 300 TD - good car
former 1972 280 SEL - not so good car
a couple of those diesel Rabbits ...40-45 mpg