Just picked up a 67 ss/rs with a 427. Considering putting fuel injection on it. I don't want to pick up a new system due to cost. I've been told a c950 might be a good option. What would you guys suggest? Been looking at some salvage yards maybe pick up a used something injection system.

 

I don't have any experience with the C950, but I'd be very surprised if you found one in a salvage yard. I'd be surprised if you found one used anywhere, but it is possible. I personally would keep it carbureted, unless you have a lot of experience tuning fuel injection systems and can do the aftermarket type.
A lot more money to go injection, but I'd probably want new to have warranty and support, unless it was dirt cheap used.