Weld-in Seat Mounts

[Jellybean]

Hey

 

We have an Mx5 with Sparco Sprint V's; the passenger side OEM seat rail chassis mounting points width's are less than the Seats mounting points.

 

For example

• Width of OEM Seat rail mounting points are 30 cm
  
• Width of Sparco Seat mounting points are 33 cm
  

 

So the Sparco seat mounting holes protrude 3cm further out on one side, missing the OEM rail mounting holes by 3 cm

 

Just from a safety point of view what is the safest option

 

1. Mod the OEM Rail chassis mounting holes to allow the runner move 3 cm further out
   
2. Mod the OEM Rail to have a plate bolted/welded to the top of the runner but it will extend 3cm so we can mount the seat
   
3. Buy Sabelt side mounting runners, but we need to measure and see if it will allow us the extended width we need to use OEM mounting chassis points; or is it safe to weld the rails to the floor?
   

 

 

 

Sabelt runners

 

http://www.murraymotorsport.ie/assets/products/2086/product/steelseatframes.jpg