RE: ZDZ 80B2
As long as the engine hasn't been abused, has good compression, it should be ok. Here in Europe, there are many places where we can still get parts for the older engines. I have an old 80RV (single) that runs like a top. You might check with RCShowcase to see about updating the ignition to a newer one which will handle the higher voltage of the Lipos. Makes it kind'a nice when you can go an entire weekend without having to recharge the battery.