Porsche seat mount brackets... is this strong enough?

[super vw]

I just made a seat mount for my 74 super that consists of 1/8" 1/1 angle and 1/1" square tubeing(tubing is about 16-20 guage), the 1/1" angle is welded in a box configuration so the seat tracks on the porsche 911 will rest on top of them, then there are 1/1" square tube legs coming off of the angle steel to the floor, at the floor the legs have 3/16 thick 3/2" plates welded to them that i planed to use as mounting plates/tabs to bolt to the floor, then stick another 3/2" plate on the other side of the floor pan to sandwich it together... is this going to be stong you think? i dont want the seats pulling out the floor!

Any opinions would be cool!
-Jonathan:silly: