2019 summer race.... Jadaharabi vs 318willrun

What length and what dimensions do you want for subframe connectors? Did not want to go looking through 10000 threads to find out what size is needed.
Was it 48 x 1 1/2 x 3?
1/8 thick?
I remember J par used about eight sets to build that Contraption on the back of his truck.
seems 1 1/2 by 2 ??