So I recently purchased a base model IS200t from an auction with some damage on it. Today I noticed that the headlights where not for base but for F- Sport and they need the computer modules behind them. Now my question is will the LED headlamps work if I buy the modules or will I have to pay the extra and change the headlights back to HID headlamps. Please help me! Idk if retrofitting works with these so it'd be awesome if I got some answers.

It should work with the modules. All it is is 12v signal for low and high. You MAY need to do some wiring, but from what i've read and seen, you probably don't. Try it.

Thank you! This will save me lots of money!