Can you increase the idle using the air correlation screws, you will need a synch?
You do not need a new cdi unit unless yours is whacked, geez lets not beat that horse to death yet?
I'm still running the original stacks, org cdi, with solex cams, etc. and it runs like a top. Yeah, yeah, yeah, It would run better with new stacks and maybe a tad better with the new and improved cdi, all I'm saying is that you can get these cars to run just fine without upgrading.