OK sound install for now is done... after a massive issue!!!..
What I ended up with to do the install was:
Infinity 475 amp, new Infinity 6x9's in the rear, and stock for now front speakers....... KFC 1000W Kenwood 10" low profile sub...
Oh and a Audio pipe line converter...... witch solved the problem....
did the full install over the weekend with all the kit and 2 stinger line converters, Sales guy said they were the best(at R350 a pop they #@*@& better be!!). Finished the install late Saturday afternoon. Nothing was playing right, the amp will go into protection the second you touch anything on the EQ on the amp. , went back to the sound shop on Monday, told them to fix it.... After 2 hours the installer cut both Stinger line converters out and installed a cheap Audio pipe line converter!!!... IT WAS LIKE HEAVEN OPENED UP and I could hear DEATH METAL being played by the angles!!!!..
Love the sub, it's in a small box and play's like you cannot believe!!!!. rest of the audio is just where I want it. The install was actualy reasonably easy!.. I was expecting a huge/massive issue, but it was actual quite easy. The biggest issue is to strip the entire rear end out!!!!...
Thanks for everyone's advice, and assistance!!!