Hi Mojo,
I have a SAPAC L-39 here in my workshop too, and will install a Kolibri.
The size is a bit bigger of the others I have been watching flying at the Kolibri meeting in Germany (I mean L-39's), which were small rockets but flew very well despite the size.
The little bigger SAPAC L-39 would be just fine and better suited, although the wings are only about the size of the stab of my previous L-39
and I still have to get used to it every time I open the box.
Martin Lambert has also the perfect short tailpipe for it. I got mine at his booth at JetPower but without any doubt this is available from Chad at SinCityJets.
Happy to see the worldwide interest is now rapidly picking up ; Martin deserves it, after all these years of very hard work to create this superb jewel in all humble dignity.
Nicolas.