Best to maybe pop down to places like B&Q and get an idea of sizes of draws you can get and measure up to see how many you can get within the cupboard. Might have to have a filler at the top or bottom unless you're lucky and get some to fit exactly.
Fitting will just be a case of good measuring for the runners for them to sit nicely gapped apart.

Long story short, bought my house not to long back but only really noticed it only has cupboards and no draws. Where would be the best place to look to covert a cupboard into draws, sizes of cupboards are either 365x690 or 465x690, any help will be helpful