Thanks all for input on dual carbs. I decided (before pulling off my sick single carb and going to a dual carb setup) to try to fix the Bocar 34PICT-3 first.
A $14 carb rebuild kit with a methodical tear down, 24 hour carb soaking, water clean out, air blast, and rebuild did the trick. Set the throttle idle screw, air volume screw, and air-fuel mixture screw as instructed, put the carb on the car and it started right up and now purrs at idle 800rpm. In fact, the difference in performance (in addition to finally getting a smooth idle) is so significant that I am thinking that dual carbs are not needed.
I think I'll put the $$ towards converting my 4 lug brake/wheel set up to a Carrerra tribute wide 5 lug brake/wheel set up. Just have to find where to get the Mangle 15x5-1/2 wheels.
Again, thanks for all the info. Finally, its happy motoring in the Speedster.
Grant.