changing hilux bench seat

I recently purchased a 6/04 Hilux single cab ute fitted with bench seats. This would have to be the most uncomfortable seat i have used. I would like to replace the seat with standard hilux bucket and 2/3 combination. does anyone know if later model hilux seats will fit straight in. I would also be interested in fitting bucket seats with a centre console. can any ony suggest options where seats can be fitted straight into existing mounts in my car.

thanks. keep smilin.