Are you sure you've got the right answer, cos heres a link with all the info on it, it has the standard 2.4 at 150Bhp and the turbo at 220Bhp. http://www.infomotori.com/a_11_IT_197_6.html
Ahh, wait, I,ve just checked www.chrysler.com and there are 2 NA PT Cruiser cabriolets, 1 is 150Bhp but not out until 2005 and 1 is 180Bhp which is out this year.