Fenders are like Mac or BK hamburgers, out of the same 5/6 components they make a zillion "different" products that are not so.
I'm sure your amp's power amp is the same as what's used on *many* others and your preamp maybe only slightly different too.
What's your specific problem?
Describe your output transistors (Tip142/147 ?) and what drives them, it might be the ubiquitous (for Fender) MC1436 or a discrete design.
Cosmetic changes on the front panel don't mean much "under the hood"
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