Jason, the pre-'64 and the Classic can be considered the same STYLE of action but with different inletting and most parts. Due to the public's high regard for the Pre-'64, Winchester, marketed the Classic as a recreation of the Pre-'64.
For stocks, there are pre-'64 and post-'64. Pushfeed post'64 and the later CRF Classic use the same stock. Assuming, as always, the same action length.
Clear as mud?
