The seats on the 208 are relative 'small' especially in width. If you go bigger, two things may happen: The passage between the seats will be hard to get through and secondly, the seats may not be able to fully rotate backwards. Sp whatever you do make sure you measure the required clearances.
Todd make a set that will fit and looks pretty much like the original.
With respect to the lids which I assume are the ones on the lockers behind the seat bases, depending on year, you may be able to get them from Grady. They won't be cheap.
If old, it will be hard to find because whatever happened to yours also happened to the other boats out there of that age/ The lids can be remade ( a tad costly) and maybe depending on what is wrong, repaired. A good fiberglass shop should be able to quote the job.