Front brace works good, can use the centre section only if required to clear plenum.
Rear brace, correct, bolts into the body, but our cars don't have the captive nuts in the frame there so you have to get creative with mounting.

Yeh the price on VE motors/parts has skyrocketed lately. They've realised the demand, the cars are dirt cheap over there. Whole car (for wrecking) could be under 80,000yen. Then you see them charging that much for a motor and box, its just crazy.