hmmmmmmI used bolts instead of welding. mine are not bucket seats they are reclinding seats.
if you have a
S model your alright
SE, SVE or what ever you then you need to bypass the airbag with the S model Airbag unit. also fitting the seats are not a problem the seat belt is a problem. depending on what seat you get you need to make a braket for the seat belts for the orignal. I was going to make one but it might be unsafe in a crash so I got 3 point harnesses.