I just searched through the I6 4.2 threads and cant find a turbo build thread. I hvae seen I6 4.2 turbos put in other vehicles and it seems to be a stout engine to play with a little.
I remember when that article came out back then, and instantly fell in love with the I6. when I blew the Lingenfelter LT4 in my T/A, I looked into purchasing the 4.2 to replace it. Too new, too expensive, too much too swap into the T/A at the time as I was still paying off the motor that blew.