Set external buy now links to open in new tab

Hey

I’d like to set marketpress so that all the buy now links for external products (e.g. ones on amazon) open in a new tab (target=”_blank”:wink:.

I don’t want any normal products sold directly on the site to be affected, just the ones that go to an external link.

Could you direct me to where i should edit the plugin code to make this happen?

Thanks