Granger has a great reputation and a lot of positive feedback on the 5g Forum. I think you can reach out to @Zach@Granger to get the details. Here is a link to their thread here - https://www.ranger6g.com/forum/threads/order-a-new-ranger-at-3-under-invoice.7104/#post-122191
If you look at what Jeep did, the PHEV Wrangler is only available in the 4-Door, not the 2-Door, with the battery under the second seat. That being said, though, the body is so short on the 2-Door I don't know that they could have found room to put a battery anywhere else, especially in a PHEV...