couple of questions re. a mk II dynaco

Hi everyone, brand-new guy here....I have a pr. of MK II units here that I'm reconditioning for a friend. I'm not very good with the tech aspect of these things (assembled and worked on a few guitar tube amps) so go easy on me please ...just a few questions;

First, is re. the selenium rectifiers - will an N4007 diode be sufficient for this as a replacement? - I read here that "any diode will work", but just want to make certain.

Next is the 12 ohm bias resistor - will 1/2 watt flameproof be sufficient as well? - I wasn't able to find any precision resistors in this value so I plan to just connect up a 10 and a 2.5 ohm in series - no issues with this?

And lastly, they came to me in poor physical condition, but in (allegedly) working order, and have had the original common/8/16 speaker terminals replaced with a simple +/- pr. of screw terminals. I'm wondering if someone can supply me with a simple diagram re. how this part should be wired up, just to confirm that how it's currently wired is correct?

Thanks in advance!

You need to post this in the BASKET of the forum where such discussions are visited by the membership. You posted your question in the Dynaco Photos section.