Help replacing 4 diodes with rectifier and improving old AT PSU

[keropi]

Hello!

I am trying to recap and improve an old AT PSU that I plan to use with a 386DX pc

Here is a photo of the pcb:



Input caps are Panasonic 330uf/200v so I left them in alone , all other caps were PCE-TUR and missing from the photo for obvious reasons

I will replace the missing caps with Chemi-con ones and I am thinking about replacing the 4 diodes with a rectifier and maybe adding some of the missing input filtering.

The 4 diodes:







How do I solder a replacement rectifier like this?



Is it a good idea? I have a KBL406 rectifier available which is more than enough for a PSU like that AFAIK. But I would really appreciate some help on soldering it and avoid a fire


The missing input filtering:

As you can see they did half a job with the input filtering:



Should I use this filtering PCB with the PSU?



Maybe transplant the common mode choke and X-Cap to the main PSU pcb? What do more knowledgeable people think?


Any help/info will be greatly appreciated ! Thanks in advance!