Recovery creates new VPC in the DR region with same IP range (CIDR Block) as source VPC and recovers the selected resources and its dependencies to the new VPC.
The recovered EC2 instances will have the same private IPs as the source EC2 instances.
The subnets will be created with same IP ranges, but the availability zones in the DR regions are automatically chosen.
You do not have an option to manually map the availability zone from source to destination region.
Example: If the source VPC is say "Prod-VPC" with 10.0.1.0/24 , the new VPC created during recovery in the DR region will also have the same CIDR block 10.0.1.0/24 and the EC2 instances will have the same private IPs as the source EC2 instances.