Possible, but not worth it. You're better off selling your current car and buying one with the spec you want in it already from the beginning.
Yes, it would be a lot of work, though.
it holds five and a half if it's an automatic if it's a manual i dont know
It may be possible to have a shop to do it for around $250-$1200
No it is not possible
Converting a manual transmission to automatic transmission is not possible but you can replace a manual transmission to an automativ transmission . That is also an expensive deal.
manual
You can change a manual transmission to an automatic. It can cost upwards of 3,000 dollars to do this for a Volkswagen Polo.
if its a manual yes. for an automatic i never try it but Saturn don't like to change its dam possible
Buy a Hayne's manual for the Mercedes diesel or a Chilton's manual for Mercedes (it has a 123 Mercedes on the cover). It will show you how to change the inline fuel filter and the main fuel filter.
A parts car like yours with an automatic transmission.
If your transmission is manual, you will have to change gear. If it is automatic, you won't.
To change an automatic galant to a 5-speed, you need a Computer for the Manual transmission of that year, and an engine.