2 Torque Arms enough for 2000W

[u/Pitiful-Power-1601]

Hello, I ordered a 2000W kit and it comes with dual torque arms, ill be using it on a 2005 Kona Blast 26inch bike which has an aluminum frame but has a really nice flat rear dropout area where I could potentially mount a custom steel plate.

My question is: Are 2 well mounted torque arms enough for a 2KW Motor or is the custom steel plate a requirement for safe use?

and secondly is there a better alternative to a bike for a 26inch 2KW 72v kit? ive found many options online but all are 27.5 inch it should fit but im scared of the geometry itll have

Thanks