Thanks GGR, but i must correct you, it's in Norwegian, not Swedish
I have read thru your threads a few months ago, and i found it quite intersting to see how you solved it. Looks like you did a great job. It was espesially interesting to read about the manual transmission conversion on the M117. I have been thinking about doing the same conversion in a 64 W111 220S with this kit from Elbe engineering.
http://elbe.ee/products/drivetrain/gearbox-conversion
The rear axle project on the W108 was a nightmare.. The short version: i tried to use the 2.82 ratio from 6.3 in the diff house from a 3.5 for steel springs, we got the Pinion in by expanding the diff house, but when it was time to bolt the two halfes together there was a gap of 5mm between the two halfes of the diff house. So I ended up using a 4.5 axle with 3.27. If i come across a complete 6.3 axle I will try to convert the axle tubes to work with the steel springs.
The right side exhaust manifold I think is from a W107 450, the left one is from the 3.5 that came with the car.