I'm looking to replace the outer door handles on my '64 and there are handles for early build 64's and late build '64's. What build date distinguishes an early from a late build? What are the other differences besides door handles?

Thanks

Early build 64's have a raised pad below the door handle/lock combination. Late build 64's are smooth below the door handle. I didn't realize there was an actual difference between the door handles. My car has a build date of Oct 63 and it is an early build. Jim

The frosted pattern on the wheelcovers changed around VIN 7760.