68 Barracuda Fastback -best fitting roll bar?

My suggestion would be to find a race car fabrication shop & have it built to the specs you wish. A generic kit will probably not work out as you want.

I used a generic (so called) kit , 4 point ,they come oversized for custom fitting , most will fit anything. I bought two extra straight pieces and bent them in a big electricians bender to custom fit the side bars the way I wanted them , then put a removeable set up on the drivers side .
Only pic I have --------
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