2 is ok, 3 is better and of course 4 is best. Problem you may run into is room and mounting it. The PO told me this was a custom 4 core. I think it might only be a 3 but either way the gauge has stayed at a steady 185. It's gotten into the 80s here lately n I ran the air in traffic. 185*.
Don't know where you're located but for slow paced trails and crawling bigger is always better. :bigok: