Welcome! You have a lot more questions to answer before we understand what you’re looking for. Yes a person can do any modification to anything but we need an idea of your skill set. Can you weld? Can you accurately fabricate metal and understand suspension geometry? Can you overcome issues with a logical solution and find fixes to problems others have never faced?
OR, do you just want long forks and you’re not really sure what is involved?
Saying “Chopper style” implies you plan on heavily modifying things and living with the consequences. What you’re asking can be a very involved process, depending on what you want.