I was perusing 1911's on Gunbroker and found a SS TRP with 100 rounds down the pipe, $999.00

So..I am the new owner of the beloved TRP, I have a black one for over 10 years, and its awesome. I remember they have that goofy guide rod with a key....

What all do I need to buy to make the TRP "normal" . Plug, Guide rod..???

Anyone familiar what I'm talking about, please hit me up.

PB