Firewall angle

[n2582d]

Anybody know a source for the aluminum angle that the firewall attaches to. Mine is cracked ajacent to the top right engine mount hole. The part can be seen on fig. 19-4, p/n 0513102-1. The closest I could find was that part # without the "-1" for only $455.84 on http://www.iwantcessnaparts.com