Clutch Me in the @ss..., I've been waiting for you to die! Options

[Milds3vn]

Got my car in mid January with 90k on the dash and the understanding that not to far ahead in her life she would need a clutch. Well now it's almost March and I've been making due with it and not experiencing to much slippage. Then I replaced my exhaust and have been tearing around this city with no reservations. So of course I am now noticing that at certain times when I step on the gas in say 3rd and on the highways the rpms dance higher but my car isn't pulling any harder. So I figure the cutch is slipping but it doesn't happen all the time and not necesarily when it's hot. Im looking into a higher performance clutch to replace the retarded one. My dad figured out how much a replacement would cost with labor and said it's about a 10 hour job. Since his mechanics are busy and work tractors and trailors he said a Toyota Shop would run us about $1000 with labor. Would anyone be able to tell me how much it cost them to replace their clutch. Also, does anyone recomend any certain clutchess for a higher performance application. I'm still looking at autocross and run my car hard on the streets so something street/strip im guessing. Much thanks men!