I'm considering this for my own car.
I have a 1978 SC and it runs good but if any part of the CIS fails it would be hundreds of dollars at the least.
For instance a new fuel distributor would be about $1000 (Aussie Dollars)
My ideal set-up would be the PMO ITBs with the "Bitz racing" Megasquirt kit.
I'm guessing it would pay for itself in the long run with the better fuel consumption and more horse power.
Spend some time at the web site. You can sign up in the Yahoo group as well. Lots of good information...
http://www.bitzracing.com/index.html
http://autos.groups.yahoo.com/group/bitzracing/