Schumacher header to TTI's

Thinking about go from Schumacher headers to TTI headers. Anyone else do this and see a big differance at the track. My last run at the track was a 11.93@ 113 MPH with some wheel spin a little past the starting line. I know TTI's will flow better, but I also like room around the motor.
keep schuamaker headers.installation and room u have with tti suxs. from what i've heard