Headers make a difference?, Headers? "High Flow" cats? some one help! 94 ST Options

[mgnt232]

I Have a 1994 Toyota Celica ST 1.8L 7A-FE
I recently had a Magnaflow "catback" installed.

I was looking into getting headers when i came across something interesting.
I saw that in order for the headers to give you car the extra power, you need to have a high flow catalytic converter. I am not sure if this is true, but i believe it is because the extra flow, from the headers would be slowed by the restrictive stock cat? am i correct? (the cat back is not restricted any more, with my new magnaflow exhaust system)
And if this is correct, would these two things match up?

The cat i am looking at ( http://www.planetmagnaflow.com/mfcatsearch...catmodel=CELICA ) !*The first direct fit one*!

The headers i am looking at ( http://cgi.ebay.com/ebaymotors/ws/eBayISAP...alenotsupported )

Are headers worth it? do i need the new cat? would it be better? with the new cat, is it worth it at all? ive never seen the difference, but im assuming alot of you have, so any one with any info, please give me some answers. thanks!-

[Mstoochn]

the cat is great, but ebay haeders you gota be careful with haha i no my magnaflow system is suiting you well, hi-flow cat is always a good idea, research headers though.

cat is a must for optimal gains and top end.

also i've seen a few direct fit headers out there, i would look at those (using existing hardware for sensors)

check: http://www.6gc.net/forums/index.php?showtopic=68576

i predict 10hp

This post has been edited by Mstoochn: Jul 26, 2009 - 1:57 PM