Mines a 1991 RCSB and only had the ABS module and valve on the rear brakes. I unplugged it, removed the valve gimmick, and just plumbed the rear brake line right into the proportioning valve where the ABS valve gimmick connected. I did not need an adapter as the line sizes were the same. Some trucks you need an adapter fitting to go from the size of the rear brake line to the size in the proportioning valve.
I'm not so sure that the 1995 is set up the same. It may have 4-wheel ABS, which is completely different.