i install a wrx seat. do u really want to know lol it wasnt the funest thing to do as i wanted to retain seat rails the biggest problem is getting it to sit low as just bolting it on top with spacer on outside rail is wayyy to high.
i had to cut to inner rail down(pretty much remove completly on passager side) so that it was level with the outside one not sure about manual tunnels but mine was an auto tunnel , also note the passager side is much harder due to the big extra muffler hump.to over come that i had to bash the corner of tunnel and floor out a bit i will be able to get u photos by the end of next week if u really want?