I have recently purchased a 1991, 928 S4 and Heckmann& Thiemann replace the timing belt, hoses and check out other systems. Scott Rife performed the work and I am very satisfied with his experience and workman ship. He was able to locate both new and used parts, make necessary repairs, replace leaking valve cover gaskets, replaced steering rack pinion boots, service CV joints and others. The new service building is spacious, bright, very clean, and equipped with new car lifts. I am very satisficed with technical capability and customer service.