So from that is read it as w brace or kidney brackets,
the front w brace has become holy, and your front sills have apparently got holes,
I am currently doing similar ish repairs to a customers 350, w brace kidney brackets, fitting kit from tarmac sports and the parts are in the region of £450-500, add the other w brace on you’ll be looking at over a grand easily tbf without the emissions or brake pipes depending on if the bolts come out niceley