Dean
Dont get rid of the any old wood you have --you will need it for patterns . I dont think you will find any plans for the wood in your car. I had the same problem with mine and without the old pieces to guide you it is a hard job.
Best of luck in your search
Ken
Where Are You From? Kamloops B C Canada
Do You own a car built by Durant? 1930 durant model 614 deluxe rumble seat coupe