Chef..all u need to do is order the seat covers..its the foam that makes it the performance seat..dont see why you cant keep the heat, unless your leather..

 

Pretty sure the SS seat backs have an extra bar on the frame for the side bolstar seat support were the cushion kinda extends out .....

We used the passenger SS back attached to our original bottom (didn't want to remove the air bag sensor) and recovered the bottom .....

The driverside was just a seat swap out along with the plug-n-play .....

 

That's the one option I miss the most when I gave my daughter my Grand Prix and bought the HHR! Every once in a while I get to ride in the GP and love to toast my buns in the winter.