E30 M30B34 Firewall Modification

[De //m3]

I am using the Euro e23 exhaust manifold since my engine is a Euro engine, and I've got some e28 downpipes in the mail to install with it. The rest of the exhaust will be a simple custom setup with Flowmaster muffler. I'm also starting on the wiring this week, so hopefully I can crank it before to long...