I actually used Jason Englishs plans from viperpit.org. He spent, probably, around 1500 hours cadding out the pit. He did a special version for me so I could use metal. I had all the parts cut on a flow jet. The aux, center and right side panels are real items. The left console I got from Martin Schmitt in Germany. Excellent work he did.
There are some angle brackets that are welded in place using a TIG welder. Otherwise, everything else is riveted together.