RE: Eletronic engine syncronizer **SUPPORT **
Four engine sync unit has been shipping for about 2 years now... I only sell them direct and I sell them for the same price as two TwinSyncs now...so email me... one of these days I am going to get a B-17 and try one myself...meanwhile I depend on my C-130 customers to fly the quadsync... about 30-50 in the field being flown....