Why don't you do it right and get a full FAA PPL?
You'll have most if not all the requirements met if you've kept a decent enough logbook.
As previously stated a foreign sport pilot does not transfer over as you need at least a PPL.
What you're probably missing is 3 hrs night and 3 hrs basic instrument flying.
If you tell us how much TT, dual received, solo and XC time you have we can help you figure it out.
Under FAA rules all flight times counts as long as it's an aircraft that has a registration number.
A c150/c152 is probably closest to what you fly now.