I know where your coming from. I have had the wiring harness clips melt from the radiant heat off the headers just idling in the garage. There are some pretty nice carbon hood extraction vents for other brand cars out there.
First I have seen them. I have used their SBC headers in the past and modified to work on a SBM flange. A 1.5 primary tube is pretty small for any kind of serious build.
I finally got the car together and on the ground. It runs now and just need to start dialing in the efi. It’s just cold up here and snowing on and off now. This keeps me from doing too much.