My wife just inherited a decent condition 7 year old or so Giant "Acapulco" 9 speed rigid frame mt bike. Overall the bike has been barely used, so other than getting it cleaned up/tuned up, I want to upgrade a few things First would be to replace that old style headest and stem (not sure what it's called, but it's the one where it's real skinny and has a single allen head bolt set into it) where I could use a new riser bar abd hopefully a used suspension fork. What do I need to determine and will it work?
Also I want to upgrade the brakes, being that the current ones are a weird cable setup that I think a cheap set of v brakes would be an improvement upon.
Everything else I want to do is just basic, but I would greatly appreciate some help on these more advance items.
Here are the specs I could find on the bike: