I have not heard of a Super Blackhawk coming from Ruger with an XR3 Red grip frame Ruger says this
Ruger introduced the XR3 Red (Redesigned) grip frame in 1962 to replace the original XR3 frame. These frames are on the 1962 and later Single-Six, Super Single-Six, Blackhawk, Hawkeye, & Old Army
My grips fit both types of Super Blackhawk grip frames Period!