I broke the intake camshaft on my 1990 104.981. I cannot find one. I think I might need to replace both intake/exhaust camshafts to make things even, so to speak. I was looking for either a pair of used ones or a complete head. I have spent considerable time and money to put this car on the road and have left myself in a bad position with out much funds to fix this problem. Hoping to get some recommendations, help locating the parts or a magician. Thanks...