it was a wishfull thinking number,NONE were ever produced.There were 3 3in main 4.21 stroke cranks said to be made and a hand full of 4in stroke 3in mains.Kellog I believe made them for the factory.There were also a few 3 1/4 main angled cap blocks made to run with the 990 SD crank.All develpomental stuff.The only engines actually made were 25 303 RA V SCCA engines and a 100 or so 400 RA V.Don Keefe might be able to ad more or correct my mistakes.Tom
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