mega 2560 shield rtc lcd sd all in one?

Does this exist can anyone answer this for me? I have a couple of shields I have stacked onto an Uno that provide the above features.

However SCL and SDA on the Uno and Mega do not match so I am unable to use what I currently have on a mega.

Any help would be greatly appreciated.

I'm not aware of any Mega-specific commercial shields, other than for larger LCDs. You could make your own starting from a blank proto shield.

The simplest way is to bend out, or clip, the A4,A5 pins on the RTC shield and run a jumper pair to 20,21. It is anybody's guess as to what the RTC shield is, but it may already have provision to re-route the connection.

Pic shows DS3231 RTC on small board which also has Bluetooth on Serial1.