Hmm, maybe I should make those, too! Very useful, IMO. I had to trim mine around the outer radius but I can give you height, width and depth, and you can trace the radius around your B-pillar.

Tom, RCR no longer sells the wings. I would like to replicate them. Can you share some pictures. TIA

Randy, I have that original style tank I purchased from a GT-40 restoration shop out of Maine. Since I have the optional RCR 'wings' that mount to each side of the firewall, I can mount it the same way as the original. The compartments in each wing is where I hide my technology like ECU, check valves, and so on. Let me know what you need.

Awhile back I was going to make these tanks using thin stainless steel and sell a few. Maybe when I retire.

"The pressure relief in the expansion tank should be the highest point in your coolant system."


I figured out why Chuck's tank has the lower cut out going all the way from front to back. There is no space between the upper four link pickups and the firewall.

Thank you Randy.  Huge help.

Good Information here:

https://blog.cantonracingproducts.com/blog/setting_up_your_cooling_system_expansion_vs_recovery

There's that rocket science stuff again. 

There's a long discussion on cooling systems on GT40s.com.
Thread 'Electric Water Pump How to.'
https://www.gt40s.com/threads/electric-water-pump-how-to.57366/

I see. Here is a pic I took at the 60th reunion.

Randy is correct. The high point is the top of the thermostat housing. So an inch or so higher is all you need...