Hi Guys....thks for all your help. Guess I have to shelf my plan for this upgrade....Btw, does rear disc conversion helps to increase the braking power as our stock march come with rear drum and I understand that we are able to do a conversion for them.
Not really worth it on the street, only for looks, that's about it.
Have to be doing some decent track work to notice an improvement from upgrading the rears pretty much. And even then, upgrading your front will be where the big improvements are.
have a look at brake pads... when i had my mini (drums) you could almost get disc performance by using hi-tech brake pads.... have a talk to a brake professional you trust. (or get someone to make a brake drum with fins, opps, not cheap!)