A phone call to the atf, and resubmitt applications..... you will still be a type 01 while you wait, but they will credit you the differance i believe.... i started out as a type 01 and swithed to a type 07 but it was early on and the original had not made it all the way through proccessing yet....
for the record, the 07 is 50 bucks cheaper....
what are you wanting to make?
cheaper is good!!! so that I understand, the 07 lets you fabricate and sell a firearm...say a receiver of some sort?