I AM LEANING TO THE 400 BECAUSE OF THE VERSATILITY AND I AGREE THAT IT WILL LAUNCH HARDER DUE TO THE 1ST GEAR . I KNOW IT WILL BE VIOLENT BUT THAT IS NOT A BAD THING. I AM GONNA INSTALL SOMETHING THIS WEEKEND AND GET THE CAR DONE. I APPRECIATE EVERYONES INPUT AS I AM AT ALOSS ON THIS ONE AND JUST WANT THE BEST COMBINATION. THE GLIDE IS A BETTER TRANS BUT I AM CONCERNED IT WILL NOT BE AS VERSATILE AS THE 400. THE 400 WILL LAUNCH HARDER AND I CAN CHANGE THE CONVERTER AND RUN THE 5500 IN THE 400 AND REALLY LAUNCH. I AM NOT TOO WORRIED ABOUT TRACTION AS THE CAR CARRIES A 1.23 60' WITH A 400 BEFORE, SO I DONT WANT TO LOOSE THAT BY GOING TO A GLIDE AS WELL AS BEING A NOS MOTOR I DONT WANT TO GO THRU THE TRAPS AT A VERY HIGH RPM. I WOULD LIKE TO STAY AT 7300-7400 . AGAIN THANKS TOO EVERYONE I APPRECIATE ALL THE INPUT, AND WILL BE WATCHING FOR THE NEW POST BEFORE I MAKE MY FINAL DECISION