What cam should I get?

Hear is my Mopar cam, .430/.450 lift.
Advertised Duration: 260 int./268 exh

# 4452759 Mopar Performance.

Sorry, my car was still at fast idle, finally near the end,
I thought to put the car in drive, so you can better hear it.

http://www.youtube.com/watch?v=Ud8mci4rjFU

I would not use any larger for a street 273; even with a 4 speed.

http://store.summitracing.com/partdetail.asp?part=DCC-4452759&N=700+115&autoview=sku