Yeah when I totaled everything I became hugely disinterested in the S55 setup especially with all the leaks you were having. Nevermind adding weight above the cars COG.
I thought about teaming up with a fabricator and a local shop to make some kits for the S55 style system, but I honestly think it’s too much money for the platform at this point. A decent aftermarket charge cooler (CSF) and all of the accessories to make up a kit are going to run are going to cost at least $3k, And a ton of install effort or shop labor. I can’t imagine many people biting on that when it basically costs more than upgraded turbos. even if you wanted to buy a stock charge cooler to save money, I would actually advise purchasing a brand new one from FCP euro since I have had so may problems with leaking used ones.
Also I think that Hydra had mentioned that he wanted the larger core from the Mercedes. I can tell you that you aren’t going to get much more than the csf style to fit under the hood sitting on top of the engine. (on an e90)