Thanks to Doostur.
Things you will need are:
- 03-05 Nissan 350z Antenna - $10 (Went to junkyard, can also check ebay)
- ISOTTA Antenna Venus $24 shipped (75mm / 2.95 inch) - Listed on ebay
- Male to male connection (See Picture Below) or just use electrical tape.
If you have any questions, feel free to PM me. Have fun!
This shows the general installation. There are other "stubby" antenna's that will work.