Engine question

Does anyone out there know if the 2001 Mitsu Mirage 4G15 has solid or adjustable lifters? I'm doing the math ($$$) on upgrading the engine, and in order to replace the cam shaft it inquires as to the type of lifters... Mitsubishi is, of course, nice enough to NOT pass along this bit of information. Does anyone out there know?

I'm going to guess from the lack of response that no one knows... so now I'm going to ask the folks at APParts what they mean by that? I've asked the dealership and I got a funny look from the technician... and the manual says nothing about it. Add to all that the fact that there is no Haynes manual for the 2001 Mirage and I'm in the dark.