Prices new with SLS are EUR 986 each, or roughly US$ 1,400 each! So as Joe says it's definitely worthwhile to search around for used sedan ones - or a whole used sedan engine for that matter; should cost no more than $500 and you could have not only the manifolds but also a fuel injection pump, starter, alternator not to mention an appropriate cylinder head and engine block to boot, all for the cost of less than half a new 'auspuff krummer' (exhaust manifold)!