I recently bought a used dual extrusion printer running Reprap. It is Bowden fed. It came with 2 J-Head Classic hotend's installed and the main unit is completely clogged and no matter how high I get the temp, I cant clear it. I have only found one place that carries this exact hotend. I would much rather replace both with 2 E3D V6's to match the one I have in my main large printer (600x600x600mm). Same parts means less money in spare parts. Physically, they will fit in the assembly without issue.

My question is, if I change this over to the E3D V6.... is it just a plug and play change-over, or do I need to change anything in the firmware or the config files?

Thanks in advance for any advice. If more information is required to better help me, please let me know.