OSCommerce Mod Integration

I need someone quick to integrate a couple of mod to OSCommerce. 2.2 Milestone 2 Update 051113 Multi-Store contribution On the fly autothumbnailer Article Manager Google XML Sitemap Feed Ultimate SEO URLs Additional Product Images Infoboxes A slight custom template will also be needed, its a straightforward template, nothing fancy. If you can hack the multistore contrib to function as a combine cart through the different stores, then thats a big bonus, but its not a mandatory. I am not asking for this to be installed, I just need someone to do the mods to the files, I just don't have time at the moment. You must have the facility to test this on a server using two seperate subdomains with the core shop installed on the root domain. Full details when selected. I know how long this would take me, so I would need this turned around in 3 days max.