Johny, my advice is you don't need and I say don't want a coilover shock nor tubular control arms in your BB Nova. Neither IMO is an upgrade.
IF you have the coin Afco BNC double adjustable shocks are the ticket but do require the lower control arm hole to be opened up and the bolt holes moved outboard 1/2". If not, Koni's adjustable street gas shock gets the job done and they are what I used for years on my former ride...
