Details for the DIY - Coaxial RCA Cable, cheap yet efficient (inspired by Arsalan Bhai)
I was on a lookout for RCA connectors, found my supplier in China giving each for about $1.35 and if 10 pieces were ordered, per unit price would fall to $0.8. Then checked in Karachi and found out that a friend already had few. I wanted to give this DIY a try hence got hold of them. They were 4 pieces, enough to wire my front stage with my amplifier.
Used around roughly 5 meters of coaxial cable wire. Was spare at home, hence it did not cost me anything 
Got the RCA connectors from a friend so again free 
Just have to use the basic tools from home like cutter and piers for crimping the wire and fitting in the connector.
Wires were crimped and RCA connectors fit onto them. The ones going in the HU were giving an approx 90degrees turn due to lack to space in dashboard. They snugged in nicely. Then put all the wires though the center console and to the amplifier which was under the passenger seat. Again the RCA connectors on the other end to the amplifier were an awesome fit.
I personally felt that the audio was much more clean and clean (maybe because previous wires were crap :P)
So in short got this great upgrade at no cost at all, requires hardly any time, wonderful DIY and amazing results 