Steering rack for a 1979 RX7
 

Need to replace steering box with a rack.
I am new to racing a Mazda and need all the help I can get.
Need help with mounting and any experience on bump steer.
Thanks

I assume you are fabricating your own hardware. This conversion has been well documented in the past although no one I am familiar with now sells the kit. I can not speak of bump steer as I never owned or have driven a R&P FB. If I may ask, why do you need to replace the steering box?

Aaron Cake has a good video of putting a Miata rack on his Cosmo that may be helpful to you. Look it up on you tube.