I am getting ready to do the same thing to my 70 Convertible. Tony Branda makes the only rollbars to my knowledge that fits these cars. I had one in my 69 Mustang convertible and it looked great! Heres the link for the rollbars,
Yes the same bar is used for the 69 and 70. Except for a few cosmetic differences, these cars are identical. And yes they are for safety first, even bolt ins, and they make the car look better as a second feature, in my opinoin.
I was wanting it mainly for safety, but it will look cool! I have a coworker who welds and I would have him install it, can you post pics of yours in the 70 converitble? Did you have any issues as far as the bar blocking anything...basically since you have gone through this...can you advise on placement. Oh and which bar did you use there are several on the website...Thanks alot for all you help...this site rocks!!!!!
The rollbar you need is the one stated for the convertible. I will post the exact link for you right here. They are pretty straight forward with little or no fabrication required. You do have to cut through the quarter piece of your interior wher it bolts to the frame on the upper bar. Most people including myself will then use window lace to go over where you cut out a spot to make it look "professional" afterwards. Look at this picture and you can see how the rollbar looks, barely lol.
As for RayJ, If I were you I would buy one of the 6 pointers from Competition Engineering. I think they are less than $200. When I had my 69 Superstreet Mustang (hardtop) I bought one and bought some extra tubing. I bent the rear tubes so they went through the rear window valance through the speaker holes. You were able to get in and out of the car pretty easy and the backseat was not effected at all.. Just my opinoin of course.. This would also save you alot of money I think.
IMHO I would go to a fab shop and have one custom made.
A good shop can make it look good and be safe for cheap.
There are lots of shops in CA if you need some names I could find some contact info for you. What area of CA are you in?