It is an ally boot 1998 car, seems the longerons are specific, not quite the same as on the later GRP boot car.
So, anything (straight) considered, at the limit we can reuse the left longeron though the right one is FUBAR.
The subframe is the most important thing, as the rear suspension is out of whack as is....
Please mail me on 235hal@gmail.com with any leads!!