Is it possible to switch the front seats out of a 2003 type-s to a 99 tl-p?

 

yes, but the memory seat option wont work, and your going to have to cut the 03tl connector and solder on the 99tl connector to the seat harness or it wont work, it will plug in but not function. also u wont have side air bags.

 

those 03 seats are so much nicer than my 99's!