new(old) seats install today

[gowest]

new(old) seats borrow from werck BMW. Have to remove the box underneat though. Will that effect body strength-stiffness?

 

[XXBULLETSXX]

new(old) seats borrow from werck BMW. Have to remove the box underneat though. Will that effect body strength-stiffness?

I believe it will remove a lot of body strength form your car. I'm not sure though if it can be added back by simply adding some subframe connectors? Possibly adding the subframes along with one of those center sections which connects both sides together to resist twisting. Look at the Total Control Products website for an idea of what I'm talking about.
But again, I'm not sure if adding those will bring back that body strength?
http://www.totalcontrolproducts.com/subframe.html

 

[Dr_Pain]

The subframe will add rigidity during lauch but does nothing for the floor pan rigidity, which is what the seat riser ALSO helps.

You have two options....
1) you can shorten the seat pan http://www.mustangmonthly.com/howto/38039/
or
2) weld in a fab'd support brace (which also acts as a point of attachement for your seats) http://customfastbackca.com/11R.htm.

Hope it helps!!!

 

[gowest]

new(old) seats borrow from werck BMW. Have to remove the box underneat though. Will that effect body strength-stiffness?

I believe it will remove a lot of body strength form your car. I'm not sure though if it can be added back by simply adding some subframe connectors? Possibly adding the subframes along with one of those center sections which connects both sides together to resist twisting. Look at the Total Control Products website for an idea of what I'm talking about.
But again, I'm not sure if adding those will bring back that body strength?
http://www.totalcontrolproducts.com/subframe.html

The subframe is a good idea I will find some local shop to estimate such work. It should be at least half the price TCP was selling. The"weld in a fab'd support brace" also seem to replace the seat box nicely. Thank.