Try here:
http://www.contour.org/cgi-ubb/ultimatebb.cgi?ubb=get_topic&f=6&t=003525 Since you have a 98, I'd order the SVT lower from BAT or SPmotorsports ($250 IIRC) so that you'd have the benefit of the larger (equal to 3L) ports- plus they're EH'd! It comes with injectors and fuel rail/lines for returnless systems, but you should be able to swap out your lines/rail/injectors... I'm not even sure if that's necessary... unless you want to more easily add a blower...
I haven't heard of any durability probs w/ using the SVT heads- it seems to be more of question of breathing enough air into (and out of) the 3L with the smaller SVT valves. Might want to contact SHOshop to see how their larger SVT valve project is coming along.
From what I hear, the SVT PCM can't adequately handle the new fuel demands.
