The 6 bolts do not have crank angle sensors, and the original poster does not use punctuation. The 1g ECU gets its signal from the Cam angle sensor. It outputs both signals. So you need to change to the 1g cam angle sensor. Its only about 15 minutes of work. Instrcutions can be found here:
http://www.roadraceengineering.com/1gcasin2g.htm
Most of the info you need otherwise is at
www.magnusmotorsports.com. I believe you go under tech articles, and its called 1gina2g. There is also a 1gina2g yahoo group. The magnus and RRE instructions were all I had when I did my first swap. I've done a couple since. Good luck.
Oh, and dont forget. The only 1g engine worth swapping in is the 6 bolt, 90-92 motor. See
www.vfaq.com for instructions on how to tell the 6 bolt and 7 bolt apart by looking at (or feeling) the oil pan, before you buy a motor. If the motor is out of a car, you can also count the bolts/holes on the crank that hold the flywheel on. A 6 bolt will have 6, a 7 bolt will have 7 ;o)