opinoin on headers

i have a 2000 3.4L tacoma trd and have exhaust, intake , and throttle body spacer and now im looking at headers to complete the air flow. will that cat put a damper in this or will the cat not really slow down the airflow. And after the headers what would be the next step in preformance when clearly i do not have money for a super or turbo charger. i was thinking about reprogramming or flashing the chip i would like some opinions.

The cat should be fine..most new cars catalytic convertors are high flow anyway so dont buy a high flow cat

Supercharging or turbocharging is pretty much the only way to get mucho power from the 3.4
you can do nitrous but be careful

you can chip a tacoma but you will be very dissapointed in the results its a waste, unlike other cars that benefit from chips the tacoma does not

supposedly headers don't really do too much on their own...if you're supercharged, it's more worthwhile to get em...