Can you get it up so we can take a look at it??

I read through your other post and im thinking that it may be the fuel system, my car had odd problems like that when my fuel pump went.

Does the car, other than the random misfire drive fine??

1999 Mystique LS V6 Alpine CDA-9807, Rear deck sub, Opt. TB, K&N RU-3530/MAF adaptor, custom heatshield, FSVT 17's, SCT 4-program chip, Eibach's/ST200's, Hella Fogs...