Follow-Up:
You gut every thigs in detail on this site http://webpages.charter.net/baldy/rialta/index.htm It is a very easy job to change Oil, climb the front on ramp, drain oil from the pan, reinstall the drain plug, remove the 4 7/6" screws put donw the pan and you have the filter housing on the driver side right in the front of the engine. Install a new cartrige with the "O" ring and put every thing in place. It need 5 and 1/2 liter of Oil and you are all set.