2001 sonoma brake booster?

what year corvette booster is used to do the smaller brakebooster conversion.. i was think'n 1989, but not sure, its be'n bodydrop'd 2.75" with 20's rims.. so i need a smaller booster.... any help would be great.. also , will i need to convert the master cylinder too >?
thanks

http://cgi.ebay.com/ebaymotors/7-DUAL-CHROME-UNIVERSAL-POWER-BRAKE-BOOSTER_W0QQcmdZViewItemQQcategoryZ33732QQitemZ8000306087QQrdZ1#ebayphotohosting

or use a geo metro it works dime a dozen at junk yards

this truck got to be done today.. so im look'n for someone that will have the part today.......
so the vette wont work? anyways.... the metro... ive heard of this....... so i will need the like a 90' metro booster and master right?
thanks...

also hows the stoping on the metro ..... cause this is for a girl thats worried bout brake pressure..... any ideas? thanks..