The sway bars measure 24mm and 18 mm. Based on the information on the following web site these are M030 spec. bars.
1985-1991 944T 22.5mm 18mm
(M030 opt) 24mm tubular 18mm
http://www.924.org/techsection/SuspensionPreparation.htm
Still here for $125.00 plus shipping. Cheap upgrade for your 924/944.
Thanks