GR Yaris Seat base mechanism for side mounted seats

[Fu Manchu]

I'm looking to swap out the std front seats with something that will is more suited to track, e.g.

Are there any off the shelf seat base kits that fit the GR Yaris, will work with side mounted seats and have a slide mechanism, that are available in the UK? I've come across this kit from Nisuba (https://nisuba.com/en/product/base-de-asiento-toyota-gr-yaris/) but wanted to see if there are any UK options before ordering.

 

[SckSqzBngBlo]

That product looks good but I would want to sit in a seat with the slider installed to see how much flex and rattle it has. You can't beat a solid seat

 

[tinsta]

Swmotorsport do some direct fit rails, with slide options etc check this thread on rails