Could anyone share some knowledge with me on these numbers:

The car is a 1970 911s Chassisnr: 9110300328

Gear box (previously been commented here on the forum, it is the "right one" but has some kind of race internals. top speed is 190km/h at 7200...What kind of internals nobody knows, and I am not planning taking a good working gearbox apart to find out):
901/13
7198766

No engine number on fan. Original engine should have been 6300505
In car now:
Engine cast # 901.101.102.0R
cam housing # 9011051110R 901.105.111.0R

So question is, what kind/year of block and cam housing?

When you get the time to visit John - you are still very welcome!