Quick question about mods

[webmissie2]

Ive had a standard Oscommerce site up and running for about 5 years now but I really like the BTS capabilities of oscmax. I currently have a non profit site the usually runs just informational events as products with an occasional fundraiser thrown in for project funds. I have modded my standard oscommerce site to have just a newsletter input for sign up without having to create an account and have the site set to not show the price or buy it now button when the price is $0 that way there is no buy button when the product is just information. I went to mod oscmax for these capabilities but can only find oscommerce contributions.

And now the quick question??? Do I have to manually rewrite the oscommerce contributions to work the oscmax, I dont see a place to get contributions that are already adapted to work with BTS. I could probably get the standard contributions to work with oscmax but it seems like i would be reinventing the wheel. How is everyone else getting the standard oscommerce contributions adapted to oscmax. Any help appreciated, great program hope I can be a contributing member in the future.