need some info. i am building a set of solid motor mounts and would like to use Aluminum. what grade would be suitable? as there are quit a few to pick from. i was thinking 6061-t4 (3/16 or 1/4). here is what i was thinking.

or


also what filler and would i need to re-harden the aluminum after welding

i am using a Syncrowave 200 non-water cooled

any idea would help....
Thanks Rich