You could try
this but its a Seneca V and seems rather expensive for what it is (I would rather have the Dreamfleet Baron which is IMO is better and cheaper). I see they have a special at the moment though with it bundled with the Saratoga and Navajo for US$45 which is a good deal.
Or you could try the Justflight Seneca
(see here) which is fairly basic but it is a Seneca 11 and there is a free time limited demo available and so you can make up your own mind.