Appreciate it...I'll be bugging you soon! I'm also wondering what you ever did with the original 117 engine. My 86 560 SEL (218k) is doing just fine but I would really like to "beef up" the HP with her as well but not sure of how "workable" this 117 engine is...Do you or anyone know of any mods to get at least the 300hp the euros have if not more (I'm basically replacing all of my original sensors,valves,etc within the engine compartment for the heck of it to give it a more "new" engine look-I've replaced the old stuff and kept the original in the new part boxes if they're still in good shape just in case...) ? I actually love working on the 117 and it dresses up nicely with my steel hoses,etc. Whaddaya think?