Engine out, need new pistons?

[LarsB]

Sad news, was taking out the engine to mount triggerwheel for MS and EDIS, but discoverd (not without surprise) that I will need new bearings, pistons and valveguides.   

my cylinders measure 91,74-91,75
my pistons measure   91,56-91,59


+0,10 measures

cylinders           91,80-91,807

pistons   9N2    91,76-91,773
              N9T    91,74-91,747


Wich pistons are adviseble?
Also do anyone have expiriense with K-line valveguide inserts, or should I just get new guides?

[LarsB]

Click for full size - Uploaded with plasq's Skitch

Click for full size - Uploaded with plasq's Skitch


As you can see I found quite alot of dirt and silicone sealant   The oilpump inlet was almost blocked by silicone, and large "threads of it hanging on the edges of the gasket