Can a regear be done at home or is this a professional job
Find a 4 cylinder gasser and steal or borrow the front and rear diffs from it !
Easy to do, have done a bunch of them this way
But , I would take it to a shop that does regears
Here is why,
if you do not have the tools needed
if you have never done it before
if you think you just may end up screwing up something
take it to a shop
Back when I did several a month sure no issues, but that was back in the 70s-80s
so now if I need gears installed I take it to someone who does it all the time
there is a trick to doing them and learning on the job doing gears is not a good choice unless you have a very knowledgeable person right beside of you all the way. Plus if they screw it up, well it is their fault, if you do, you maybe buying another diff and gears
of course front diff has to come clear out , so many people do not like to do that although it is super simple ( if you know the tricks ) LOL
and as always , " If you have to ask,.......take it to someone who knows" And YouTube is not where ya go