Anybody who has known anything about car engines, etc., over he past 100 years, know that CAST IRON exhaust manifolds have been used on cars since forever, with no problems to speak about. Leave it up to Rover engineers to screw it up, trying to weld cast iron strips onto stainless steel exhausts, causing cracks in the welded areas. The English Rover motor company has made vehicles for close to 100 years too; in early years made some outstanding examples, of very high quality vehicles, BUT in recent years, due to repeatedly selling the company to foreign firms, only to gain English control of the company between sales, and engaging in other questionable practices, have resulted in the present situation: Terrible quality control, and engineering mistakes. It is as if Rover lost all of its former credibility, lost much of its former engineering know how, even resorting to using cheap Ford engines, etc. It is as though Rover forgot all it once knew, and have just started over in the manufacturing of vehicles. Since the early 1960s, I have had Rover and Land Rover/Range Rover vehicles, but I am now tired of the newer junk.