All the 55 series car's SC/NA are based on the same 113 block the SLR engine is the 115 series unit however that is basically a carbon copy of the 113 with a different SC its assembly is considerably different but its construction is basically the same as whats under your hood.
Forged pistons in the 113, gotta remember this is a very old engine and not only is it built like a brick sh1thouse but its battle hardened it can handle the boost pressures no problem whatsoever i can assure you in fact i will have to check but i have a funny feeling the pistons are the same PN for the whole series.
For the gearbox you can have the parts you want custom made if your really serious.
__________________ One thing you will learn with German cars - If it's simple it ain't happening. |