The answer is No. This is due to the fact that the newer components if not of the same brand would not be considered as recognized by the panel’s manufacturer as a compatible component in accordance with that panel’s listing.
NEC 110.3(B)

1. Insufficient Training
2. Lack of Code Knowledge
3. Substandard Workmanship
4. Unsafe Practices
5. No General Liability or Workers Compensation Insurance
6. Potentially endangering your property, your lives or the lives of others.
7. Up to a $5000.00 fine for hiring unlicensed contractors.
8. Home and business owners are liable for any injuries sustained by unlicensed contractors while working on their property or traveling for purposes related to their property.