I'm not randomly adding tubing. I'm reinforcing the largest open (unsupported) areas within the car. The windshield area is one of them. I don't have the software or surface plate setup to accurately model & measure the gains of each piece of tubing. I'm plagiarizing the designs of top programs running stock bodied cars (BMW Motorsport, Porsche Motorsport, Prodrive, TWR, SBR, etc.).

What other tubes do you recommend adding over the windshield diagonal brace? Here's a summary of my roll cage layout as I have it sketched up.

- standard 6 pts. with rear down tubes picking up the rear spring mount
- knee bar as req'd
- x-brace in both doors, main hoop, rear down tubes
- brace from main hoop shoulder bend to rear mounting point
- x-brace from front down tube to firewall to pick up strut tower braces (Factory braces)
- Petty bar from above driver head to pass. side down tube floor mount
- halo diagonal from pass. side main hoop to driver's side down tube
- windshield diagonal brace from driver's side top to pass. side knee bar.
- main hoop shoulder bend to top of a-pillar
- top of a-pillar to front down tube floor mount

* all points will be a single node as much as possible to reduce moments within the cage itself.
** only req'd tubing will be req'd size, all other sizes will be smaller.

It'll be a spider web, but I know I'll need some ballast so I might as well get some stiffness/safety out of it.