zoomies on n/a

Hello I'm building a tube chassis duster. And I need to make the exhaust. I'm going to probably do fender exits. But would love look and sound of zoomies and it would be really easy to fab (so would the fender exits I guess) so I've read a little bit on zoomies v's collector and it seems you lose power on dyno runs but in real senerio gain mph with the zoomies. So what do you guys think. The motor is a 440 .030 over, trw slugs, stock rods with arp bolts, stock crank, soild roller cam around 630 lift (not sure yet) and I'm going to purchase the promaxx heads cnc ported once they finish their program. Thanks in advance. Keith