T.T.I's vs. ........you be the judge
And the difference in price between the tti and hookers are? That's a lot of money for 9hp if I remember the article correctly.
That's a pretty weak engine too.
Bottom line, there is no one header that is perfect for every application. Seen hooker super comps and hedman husslers stomp a mudhole in tti race headers by up to about 40 hp on some mid 500hp and higher engines.
fit, $, performance? You need to find out what's really important to you.