Retro trigger...
Max Million 16--I haven't done a trigger job on an older Savage. However I have replaced several rifles' triggers with Timneys and have had excellent results. So that is the way I'd go were I you.
The old Savage trigger was umm, not nice. I can't imagine making it better than an Accutrigger.
When Savage designed the Accutrigger they had 2 goals: (1) To make a lawyer-proof adjustable trigger, and (2) To make a great trigger as trigger. IMHO, they succeeded on both counts.
I have a Savage with Accutrigger, and it works GREAT! It does take some getting used to--Took me about 3 shots with it. (Seems like you pull the false trigger for about a yard and a half, then when you just touch the real trigger, the rifle fires.) Unfortunately, Accutriggers will not retro-fit into older Savage rifles.
So: Bottom line: Don't bother messing with your current Savage trigger. Make it do, as is, while saving up for a Timney. Or, sell the old Savage, save up some more, and get a Savage with Accutrigger and Accustock--you'd not be sorry for that!