I just thought this might be the case, since there is nothing wrong with the Revell 63 Impala chassis.
Why would anyone go through the trouble of swapping a chassis when it's not needed?
However, the AMT 63 Impala Chassis isn't that good, and the 62 convertible chassis is much better, I thought that would make more sense. I apologize for trying to make sense.
Oh yeah, I know what the title states, and I know Revell has a 62 Impala.