I was wondering if anyone knew if any 89 formula 350 hard tops came with leather seats from the factory?

Pretty sure that leather was never available in a 3rd gen Formula from the factory. Only base cloth seats.

that's what I thought thanks. ive been researching them and havent found any info to say if they did or not. my leather must be from a gta then?

Yep. They're a popular upgrade, I got my cloth Ultima seats out of a Formula (which they had already been swapped into).