I have a gray market ’95 S280 with a 5-speed manual transmission and it needs an engine. I plan to either buy a 1994-95 C280 parts car or get the engine from a junk yard. Obviously Mercedes never sold C280’s of this era with a 5-speed stick so what if any modifications will I need to make to install the engine from the automatic C280 into my 5-speed S280? I checked the parts CD and the crankcase(block) and the crankshaft have the same part numbers between the two cars. Will I just have to swap the flywheel for the flex plate and then everything will bolt back together?