I see more 4 doors than anything else, several in my area. A friend has a finished couple, extremely nice. I see 4 doors from time to time, all depends on how good you want it and how much you want to pay. Some that are relatively inexpensive have all or most of the parts but need a ton of work. Those that need little work are more expensive.

Check out Hemmings.com and http://ww2.collectorcartraderonline.com they have 8 now starting at $12k. Also check out the 1934 Plymouths at collectorcar, they have some very nice onces starting at $15. The 34 deluxe model has a 114 inch wheelbase in comparison to the 108 inch in the 1933. Longer wheel base, better ride.

Also Hotrodhotline.com or Cars-on-line.com and many other sites that sell original and rodded cars.

Good luck.