Need new diff t-case and trans fill and drain plug #'s?

Im going to be servicing the diffs, t-case and trans and want to replace all of the drain and fill plugs as they appear to be in poor condition. I saw a Youtube video where a guy used a magnetic drain plug for a Corrola I think he said, #90341-18021 on pre 1985 axles for the drain and fill plugs. They also fit in an early t-case. It uses the same washer part numbers as my 03 for the t-case, rear diff, front diff fill and trans. Just currious if anyone has done this or knows if this part should be interchangeable with my 2003 as the MSRP is only $2.56 each.

Also are these part numbers correct for the factory replacements?
Rear diff drain plug 90341-18057 $10.29 / Washer

$14 12157-10010 Toyota Oil Drain Plug Crushable Steel Gaskets Set of 10 OEM 12157-10010

12157-10010 $1.32
Rear diff fill plug 90341-18049 $4.05 / Washer 12157-10010 $1.32
Front diff drain plug

$13 90341-24014 Front Differential Drain Plug

90341-24014 $9.54 / Washer

$7 90430-24003 Front Differential Drain Plug Gasket

90430-24003 $1.78
Front diff fill plug 90341-18032 $6.26 / Washer 12157-10010 $1.32

T-case plug #'s ? $ / Washer

$7 90430-18008 , Used for Change Transmission Fluid

90430-18008 $1.55 x2
Transmission plug #'s ? $ / Washer90430-1808 $1.55 x2

Thanks in advance for any info.