M50 manifold is the best way to add power to any BMW E36 engine; M52, S52, 328i, 325i, M Roadster, M Coupe. M3, Z3 , Here's a thread with information on installation, etc. : https://www.bimmerforums.com/forum/showthread.php?544874-Official-M50-Manifold-Swap-Thread .......... If you respond, please put "POWER" in your response, so that I know you are a human. Cash only. I won't answer to "Is it still for sale", etc. If the ad is up, it's still for sale. If you want it shipped to you, you have to arrange shipping. I will deliver to a shipper close to me in Tempe. PLEASE NOTE: I get some generic responses, with no sign that they have read the ad. I don't respond to them. If you respond, please put "POWER" in your response, so that I know you are a human.