On e30's I swapped a good passenger seat foam for the driver's. Back then, you could buy a whole seat for about $35.00 from LKQ. I still have a couple in the basement.

__________________
2001 x5 3.0 (sold with broken motor), 1990 e30 M3, 1991 318is, 2002 325i, 2008 335i Dinan stage 3 6 speed,