The Permit-class submarine (known as the Thresher class until the lead boat USS Thresher was lost) was a class of nuclear-powered fast attack submarines in service with the United States Navy from the early 1960s until 1996. They were a significant improvement on the Skipjack class, with greatly improved sonar, diving depth, and silencing. They were the forerunners of all subsequent US Navy SSN designs. They served from the 1960s through to the early 1990s. They were followed by the Sturgeon and Los Angeles classes.
 
This kit is printed in high strength, high-resolution resin by a professional commercial company. Rendered in 1/72 scale, this kit builds out to: 
 
Length: 1150mm (45")
Beam: 148mm (5.8")
 
It is a prime candidate for the 300 Series SubDriver with single shaft and 3.75" ballast tank (7" length). 

Price includes all parts and components in photo above. A package including the following is available at additional cost: 
 
300 Series SubDriver as outlined above.
LiPo battery pack
AD2 pitch controller
BLM failsafe
Stainless steel drive shaft
Oillite bushings
Flotation foam
Self-adhesive ballast weights
3" universal cylinder bulkheads
Price for above: $980