Hehe. Here I am. The original poster wanted opinions from people who'd actually gotten a turbo installed on their 2G. I don't (sad, but true) so I stayed quiet.
However, from what I know, power output with a halfway-decent turbo kit will rise to something like 220HP, at the wheels with about 7-9PSI of boost. This is close to 100HP more than a stock V6 can muster (~135HP to the wheels). This level of power, in a 2900-lb car, will definitely put one solidly in the low 14s for a 1/4 mile run. Maybe even 14.1...
Cars that run low 14s in the 1/4 typically run low to mid 6s in the 0-60 dash.
A couple of points to ponder though. First, the 2G MX6 and PGT have open differentials, meaning, in effect, the wheel with the least traction gets the torque. Torque steer could be quite bad and don't even think about getting into the boost in a corner. An LSD (limited slip) differential (Quaife, for instance) might be a good idea if funds allow it.
Second, the OEM clutch will not handle that type of torque. 220HP at the wheels is 260-ish at the crank. Assuming the power peak occurs near 5250, the torque will be up there too, about 250 or 260 ft-lbs. That's way, way more torque than the OEM clutch was designed for. An ACT or similar unit will be needed.
If the trans is removed for clutch work, an LSD should be considered. If the LSD goes in, get the synchros replaced and the shift mechanism (selector rods, detents, shift forks etc) eyeballed too. Use only synthetics in it (Redline MT90 etc).