Any possibility to make Redundancy b/wCisco 4503 and cisco 9403 switch

[AMD@84]

Hello,

Please advise, it's possible to create Redundancy (VSS ) between the cisco 4503 and cisco 9403 switches. 

[pieterh]

you'll  find your answer in document Configuring Cisco StackWise Virtual
which reports 
• Both switches in the Cisco StackWise Virtual pair must be directly connected to each other.
• Both switches in the Cisco StackWise Virtual pair must be of the same switch model.
• Both switches in the Cisco StackWise Virtual pair must be running the same license level.
• Both switches in the Cisco StackWise Virtual pair must be running the same software version.
• Both switches in the Cisco StackWise Virtual pair must be running the same SDM template.
• All the ports used for configuring a StackWise Virtual Link (SVL) must share the same speed. For
example, you cannot configure a 10G or a 40G port to form an SVL, simultaneously.

[balaji.bandi]

no that is not possible, instead you can create layer 3 network to load-balance between devices.