"just wonder what parts I would need on my l67 with a 14psi to make it run safe without having any problems got 5k to spend"
10 PSI is the maximum pulley that you can run in the stock vehicle without any modification. Any pulley higher than 10 PSI would require a full custom dyno tune or some form of intercooling or both. We can help you with the intercooler kits that can be shown below.
With the installation of our intermediate blizzard intercooler, it allows you to drop from a 3.4 to either a 2.8 or 2.7 inch pulley, on a virtually stock car and all without the need of an expensive tune. In addition, car idle and drivability remain unchanged even with the factory tune!
You can run an even smaller pulley for higher boost, however you'll most likely require a custom tune.
To give you an idea about the difference between these kits, please refer to the lick below.