Not particularly a "How to video" just some of the major steps of removing and installing a seat into a IS300.

Sparco EVO - https://www.sparcousa.com/product/evo...

Sparco side mounts - https://www.sparcousa.com/product/sid...

PLM floor mounts - https://privatelabelmfg.com/products/...

IG: @is3nate