I have an MSD 6AL 2 with 2 step rev limit and launch control on my 2T-G with 45mm Webers. It has eliminated the miss at high revs with the standard toyota igniter and Bosch GT40 coil. I use it with a magnetic pick up from ra60/40 22r/20r motors. It hasn't missed a beat since.
I launch at 6500rpm and final rev limit to 8800rpm.
I recently also bought an MSD timing computer for a more linear timing advance.
The mechanical weights for timing advance was a pain driving the car on the street. I took them out and locked the distributor:
I also marked the crank pulley for reference on the amount of advance:
So far the car has been a lot smoother to drive and I am able to adjust the total advance with a timing retard option on the timing computer if the advance is too high.
MSD is a great product and I would recommend it to all, so simple to install and easy to use. You are able to retard the total timing by 4/3/2 or 1 degree if you like.