1968 firebird IRS kit

[68brdlvr]

Hey all,
Nice place you have here. Like I have read in several post on this site I too have been searching for the ever elusive IRS install kits that don't cost 4500 dollars. So far I have been coming up short and hope you all can point me in the right direction. Even if i could just get the fabrication measurments / instructions to build my own...honestly as a matter of pride I would prefer this method.

Anyway...I would be greatful for any help I can get.

Thanks!