Cayman Racecars for new series ($79k ready to race)
This looks fun and economical:
http://www.napletonmotorsports.com/services.html
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73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs). Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550 Maranello