I agree with Joe, as a matched set is best and perhaps easy to salvage. Are you using Camaro firewall pedals or grafting the booster to a trucks original floor pedals?

If you're buying new components, there are many options using a single booster and proportioning valve. I understand that the design of these are very similar to late model GM. Assuming this is going in your truck, there are options for firewall or under cab mounting these components.