first off the J30 is gonna cost you more than $6k just for the motor and tranny installed
the H22 turboed will cost you more than $6k also if you use new, good quality parts. unless you do the installation
the F23 built turboed will yield you the most power
H22 will only be able to handle 9-10lbs of boost MAX. a built F23 block pushing 20lbs of boost will blow away an H22 running 10lbs. an F23 pushing 20lbs should put down about 320-350hp minimum. while the turbo H22 will put down about 280 MAX pushing 10lbs
if youre really interested i have a bare F23 block and a turbo kit both for sale. the block is perfect and the turbo kit is perfect. its an FMAX kit. if youre interested PM me