I believe 3 are still airworthy. There are known to be around 33 P-39s and 3 P-400 still in existance. One was only recently recovered from a Russian lake...
i voulenter at an aircraft restoratin musem just north of minneapolis. It stopped over for the night (I think it was going to oshkosh) and he asked if i wanted to sit in it. man was it cool, kinda wierd that the driveshaft goes right under the seat. unfortunatly no pics(i didnt get the memo that it was comming over night ) .