right i dont have a fiesta ( or any car for that matter ) but i always wanted one so , the seats as far as i no there a straight swap , the bumpers FRST or XR2I bumpers skirts and archs will go straight on, the bumpers just bolt up and the archs have bolts coming out of them ( of there the same as ERST ) but most people just cut them off and bond them on to save drillin the arch and keepin it as rust free as poss .
the suspension agen if its like a ERST the kit will go on but i think the ERST andFRST were lowered 20mm when they come out the factory so a 40mm kit for a FRST is 60mm normal ..... well i think thats right im sure some one will tell me if im wrong