Well Matthew, welcome!
Not entirely sure what it is you're asking as it isn't very specific. Short answer: YES! That's a large part of what this site is about. Might I suggest that you spend a little time reading old posts and getting an idea of exactly what it is you want to do. More specific questions will get more specific answers. Take a little time to learn about & understand the different mods & options out there.
Then fast starts to become a matter of how big your wallet is - as they say you can have it cheap,fast & safe - pick two

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As to the convertible thing, it is a whole lot more complex than slicing the roof off and making up a soft top. Can be done, but again maybe spend more time researching the details. That will help you understand the size of the number when someone quotes you to do it properly!!
Good luck with your project!
Barry