Just like to say hello as this is my first post… I’m just gearing up to start construction on a Stereo SID using a pair of 6158 chips… I have just started sourcing parts and acquired a 2x24 LCD and would like to know if this will be acompatible which I think it should be… I plan a purchasing the modules from Smash TV and am looking to build the minimal unit with LCD/Bankstick/Encoder/and the 10 or so buttons to control it… Is it my understanding that if I contstruct the a stereo SID that the SID V2.x for it is still under BETA stage and will this effect the pre programmed PIC from Smash TV if the V2 O/S is upgraded?
I apologize if these questions have been asked a multitude of times…
Just like to say hello as this is my first post…
Welcome aboard!!
I’m just gearing up to start construction on a Stereo SID using a pair of 6158 chips…
Hmmm, I don’t think those are SID chips 
I have just started sourcing parts and acquired a 2x24 LCD and would like to know if this will be acompatible which I think it should be…
Depends… You should be more concerned with the driver, than the dimensions.
if I contstruct the a stereo SID that the SID V2.x for it is still under BETA stage and will this effect the pre programmed PIC from Smash TV if the V2 O/S is upgraded?
Don’t confuse Operating System (MIOS) with Application (MBSID)
I apologize if these questions have been asked a multitude of times…
Not to worry… You will probably notice that I’ve raised as many questions as I’ve answered You can find a lot of information on ucapps.de and the forum and the wiki. I definitely recommend a LOT of reading on those sites, and you will see that mostof your questions are answered 
Good luck!
Thanks… Yes lots of reading which I have been doing and lots of bookmarks… Yes I have the right chips 6581 just a typo …