I've seen 11.69 @ 117 with a stock (ported) neck intercooler. This was done on a stock heads/cam/block car. I think it really depends on what shape your stocker is in. If it doesn't leak I would keep it around for a little while.
Alot of guys say that the stock ic is good until 11.50's. Unless you have extra cash just layin' around or you come across a deal to good to pass up I would just wait.
HTH,
Ryan