roll bar

[Zmatt]

I have seen spiders with them and IAP has roll bars, but not for the spider. Where can I find them?

[azygoustoyou]

There's one on ebay right now.

[So Cal Mark]

Autopower in San Diego makes Spider rollbars. You can buy direct from them, but most Fiat vendors that sell bars feature Autopower

[Zmatt]

which of their roll bars works best with the spider?

[brunorahl]

The Autopower bar that everyone sells fits well and is easy to install. It also isn't powder coated, so a paint shop can easily strip it and paint it to match your car. It doesn't have a cross brace, but you could add one if you wanted to convert to 5 or 6 point racing belts. You can have a custom bar made if you wanted to add something like a low slung door bar or an X brace for the rear. Perhaps have the rear brace punch through into the trunk and link to the rear frame section, for extra safety.