Old crate bx-200 head speaker out jacks

[CORBS]

Hi everyone! As luck would have it I have a show tonight and the plastic input jacks got knocked out of the back of the amp I have to use tonight. I have attached pictures. I was wondering if I could replace them with a standard metal guitar output jack and if so what the individual leads on the plastic boxes are. Any advice or help you can give is appreciated thank you

[Lowactnsatsfctn]

I was given one of those amps because one of the jacks was loose. its easy to solder them back on. you dont have to take off all of the little screws on the heat sink, just the middle row. I added a Speakon Plug when I soldered it.