Outer Limits 4x4 Board

ok i gota mount my shocks for my ifs rear swap etc, i was planning on putting some 50mmx50mmx2mm shs in and mounting the std rancho studs through it and then welding this to the top of the chassis rail,

will the shs be strong enough or should i be running 4mm , i really wanna get my rig driving by next thurs to go away for easter, but that is looking less likey now :(

the stronger the better, it might take longer but you'll be thankfull in the long run

dont use 2mm use 4mm u will regret it if u dont

ok 4mm it is would 50 x 50x4 angle ok or would the SHS be better