I believe that turbo cams have much shorter duration than n/a so not a viable option..
2.0 20v NA
lift: 9mm inlet ; timing: open 9btdc->9atdc,close 49-39ABDC
lift: 8mm exhaust timing: open 27BBDC ,close 2ATDC
2.0 20v T
lift: 9.3mm inlet ; timing: open 8btdc->10atdc,close 54-36ABDC
lift: 9mm exhaust timing: open 40BBDC ,close 0ATDC
The Stilo 2.4 has larger valves than the hgt but not sure if the cams have different profile....this may be a better option and would be a straight swap.
This is why i've put off doing my cambelt as want to put a 2.4 stilo engine in as the mk1 inlet will bolt up and easier to reprogramme.....