The Shop-to-shop banner can be easily adapted to all versions and is a very powerful advertising system that consumes a lot of data transfer.
I have version 2.3.1 PHP 5.1 I have an old version because I did the program many years ago and I invoice in a physical store with it and I sell online. It has an integrated system that is very easy to use, osc23 is super fast and the current version does not It helps me run my business.
https://apps.oscommerce.com/Bs315&enterprise-3-0-oscommerce
Enterprise 3.0 is a very advanced system and very easy to use, I cannot change.