How do I mount my seat runners to my chassis?
The VortX has 2 19mm deep by 25mm wide tubes running across the chassis.
Are M6 bolts into rivnuts strong enough (for the SVA man)?
Do I have to drill through the tubes and out of the ali floor pan and bolt through the lot?
If so, what size of bolt should I use?

and rilled through the floor and i used 8.8 M8 bolts and nuts..

they don't go nowhere now..

and thats what you want.in an accident..

alse the weight of the seat x g forces in an accedint..will sqeeze you in the harness not what is ideally..

Tks

you need to use bolts M8 high tensile and drill through the seat runner mounting rails in the chassis, then use large load spreading washer on each bolt

best regards

marc