[RC-Monster Mike]

As Serum said, I doubt you will find a lot more power using the same cells (in other words, it wouldn't be worth the expense). The Plett, Lehner or most motors mentioned in this post can use all the available battery power, so the only difference is potentially efficiency (which is a minimal difference with these high end motors). So....more voltage is where you need to look to get more power. As Serum said, the gp2200s can deliver the needed power under a load, as well as a weight reduction (even using the same cell count with 8 oz less weight will make a slight difference), and as you increase voltage, you could potentially lower the amp draw as well, which may justify the gp2000 cells. Your truck is powerful enough that an increase in power output that is noticeable enough will likely cost a few bucks. Of course, you could sell the current setup to fund the project, if that is something you considered.