nevrgr0wup

i am the proud new owner of a 71 240. My grandma was the origional owner, according to grandpa it was one of the first 10 z's shipped to monterey county ( but hes old so not too sure about that one). it was sitting at thier house for a number of years and i took it upon myself to fix it up because i just couldn't take it anylonger... its totally stock with an automatic. they have constantly had problems with electricle/ carburation/ timing/brakes/steering/ whatever else could go wrong. some engine work has been done but nothing major.... the engine has 194,000 miles on it now.... all grandma miles though. i have jumped into this thing head first not knowing much of anything about z's (im a chevy guy) but since i have had it .. it no longer backfires, it doesn't diesel or hesitate on take off i fixed the leaks and cleaned the windows! What i would like to know is a good place to start with upgrades... with the mileage i was thinking about a complete rebuild but it doesn't smoke at all and still has good power. just want some simple (at home)upgrades and info on some z shops or clubs in my area. im in san jose area. also thinking about changing to a manual trans... (wich one?) triple carbs would be nice too.... but where to get them? any help at all would be nice.... and all info. thanks.