Neu 1521 in a maxx???

[Emaxx_Quebec]

Is there any benefice to put a 1521 1.5D in a FLM maxx instead of a 1515 1y.
It weight arounr 12 pound and more than 15 inch wb.
Can we gear it for more speed ? I'm actualy 20 / 51 with a strobe slipper and sprong.
Is it a lot overkill or 1515 1y is plenty.
I know 1515 1y will be faster than 1521 1.5d for the same gearing and voltage due to Kv rating.

I'm ok for the Diff upgrade : I have the LST2 one.
I'm ok on the trans side: Thanks to Ultramaxxed gears and idlers.
Ue center drive shaft.

I plan to run 4s mainly and few 5s and 6s. Darwn ice charger ( 4s maxx charge)

Here is my ride.




Thanks
Fred