I am working on finishing up the design for the new hydro-piston ballast system in 3". The next size will be 3.5". I am wanting to try the new 3.5" system in an old ThorDesign SSN21 Seawolf to use as a test mule which I intend to make an all new kit for sometime late next year. If you have one, or know where one is, please PM me!
Want to buy-Unbuilt/partially built ThorDesign SSN21
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