Clutch and throttle vibration after driving hard?

[gsxturboboy]

so Last night I was showing off in my 98 gsx. I was driving slow in first gear and then took off and took it to red line. Once I shifted I immediately noticed something changed. the pedals felt different. in 1st to 3rd gear the clutch and the gas pedal have vibration, mostly in 1st gear. and also mostly in low rpm. in 3rd gear when I floor it it feels as if there is something right under the gas pedal pulsing really fast as well as vibration at high rpm. I also noticed that the way the car handles and drives feels different when I floor it the car feels like the wheels are gunna fall off or something. maybe its just because if the vibration. Yes I know I shouldnt be driving it hard. I am about 99.9 % sure something failed in the tranny but does anyone know what? there's no grinding or noise just vibration and it feels like it's holding my car's power back. SO ANNOYING! A similar incident happened with the last tranny. I shifted and high rpm and something felt different but that time there was no vibration and 6months later the tranny blew.