Quote Originally Posted by jrcook416 View Post
Has anyone had success changing the default template to add something like a Bootstrap Select object?

--J
There's a 'binder' plugin that enables the Bootstrap-4 template to use One-Page-Checkout (https://www.zen-cart.com/downloads.php?do=file&id=2305), if that's what you're asking.

Note that this 'binder' will be part of the next major release of the Bootstrap-4 template.