Strange Engine Number? Stupid tuning questions

Good point with the headers to wait till the engine is mounted.
I checked the dutras, but i have the to say that they are quite expensive :(

9:1? ok. will tell this the machineshop

i can not find the Silv-O-Lite Pistons in 0.40 oversize. Only standard. Contacted already somebody from the Netherlands (which is
the closest location to where i am living) if they have them on stock or if they can order them. Lets see.