Hi,

You have probably got no replies because its hard to fathom your intent.

The bike you linked to you can't change the wheels because of the brakes,
you can't change the bars because of the brakes, given that there is no
point changing the saddle and seat post either to most people.

Its simply the wrong bike to buy and try to modify. And you can only buy
it on the Indian sub continent, so we've no idea what your choices are.

A nice copy of a UK 60's Raleigh 3 speed would be a lot better than
that very clunky old bike, with very old rod / stirrup brakes.

rgds, sreten.