well after reading over 100 pages on the LVVTA Certification site about the requirements for modifying seat mounts I think I will suck it up and buy a set of BA Falcon Xr6 seats and a set of Huracan seat rail adapters
https://huracanfabrication.com/colle...t-adapter-kits
it will save me hours of fabrication and hassles with the certifier, plus I can fit factory seats back in if that is ever a consideration in the future, as to fit the swift seats there will need to a be a lot of cutting, removing the factory seat mounts, welding and doubler plates to be fabricated. Even if I follow the LVVTA guidelines to the letter it could all end up being a massive headache :O_O:
The Huracan kit is all bolt in and very slick, Xr6 seats are comfy as too.