Engine overhaul - what to do and not?

[dc lindberg]

My R100RT, 1981, needs some service and overhaul.
It has run 160 000km and is leaking oil at the pushrod tubes/grommets and cam-chain cover.
The gearbox has been overhauled and is wating for the engine to get a similare attention. The final drive is overhauled to.

What would you do at 160 000km overhaul when the engine is opened this much ?
Of cause I have my ideas, but am all ears to yours to -

There is so much to drool over at the "candy-stores":
e.g.
* http://www.motoren-israel.de
* http://www.wuedo.de
* http://www.siebenrock.com
* http://www.q-tech.de
* http://www.hpn.de
* http://www.fallert.com/index2.html
* http://www.wunderlich.de/
* http://www.rabenbauer.de/
Not to forget the neat gadgets CC and Luftmeister in California used to offer! -

My main usage is commuting, a mere 30-50km one-way; traffic jam, highway mainly. Speed limits 50, 70, 90 and 110km/h.
Using 33/11 finaldrive and HPN 5th (+5%), and 1st (-6%).
All weathers - none to bad to drive; if too chilly I switch to my Winter-bike with studded tires and skiis.

How would you optimize the engine ?