RE: H9 60 Size P-47 Thunderbolt-Build & Flying
The Robart 511S "economy" Robostrut ready air kit cost me $115.99 from Tower. The Robostruts were $75.98 for the pair. The 511 kit with wire struts was available for about $119. The air kit includes the retracts, air tank, lines, control valve, fill valve & T-connections.
John