I just replaced my stock hotend with a V6 clone. It works great (although the mount I have has no part cooling fan anymore). You can easily swap an entire heat break, block, and nozzle. You might need to use a 1.5mm wrench to adjust the ptfe tube and square nuts in order for you to have the same height offset if you're going with the old heatsink mount.

Do yourself a favor for future you. Buy some Anti Seize and get a little bit on the threads of the nozzle and heat break. (caution, this stuff is MESSY! you'll have silver stuff everywhere!)

https://www.amazon.com/Permatex-80078-Anti-Seize-Lubricant-Bottle/dp/B000FW7VGE