I have a 100 Shot on my 1995 LT1 Longtubes,373's 58mm T.B. and CAI.I have NGK TR6 in there know.My speed Shop in Town only has TR5 I was Told they will work great On NOS.But I might see A Power lose. on Motor.I run N/A More. 12.70@107 and 11.76@116 NOS.
Thanks Let me know what you think??

 

Get the TR6's. If they wont order them for you, then find someone that will.