[mclaren1885]

well as a matter of fact let me answer ur question put forth in the 1st post..for a starters avoid the factory audio setup..try to get some cash discounts on them if possible..ICE is best done as an aftermarket..

for the chevy :
as far as my knowledge goes all the 4 doors of the optra can accomodate 6.5'' speakers(thought would love the gurus to confirm on this)..so the best setuo would be :
1. alpine 9833 HU (production is stopped but available in the market) or pioneer P1Y HU..this should cost you around 13k..

2. get good 6.5'' components for the front door pads from a good speaker manufacturing company(not necessarily sony and pioneer to be the best choices)..the popular brands we recommend are alpine,hertz(from my personal experience),JBL,blaupunkt..well we have other brands too like RF,LA,MBQ,boston,soundstream et all..these component speakers will give u the best soundstage..these will cost u around 7k..

3. get good 6.5'' coaxials for the rear doors..remember these are to be used only as fillers and not in a way such that they overpower the fronts..it would be better to keep the fronts and the rears preferably from the same series and the same company..these will cost u roughly around 4k..

4. a good 4-ch amp to run the speakers..however u can use the amp of the HU to run the rear speakers and use the 4 ch amp to connect the fronts and the sub..amps preferred are the alpine amps (though a bit expensive),blaupunkts at a fair price,but taking the steal at the price will be the pioneer 6100 amp at 7k is great VFM..u can get a sony 504 too for 4k..

5. as far as the sub goes u can get a sub and use a sealed enclosure for it to achieve tight and punchy bass or else get a tube sub which will give u more of boom boom..do read around the ICE section and u will find plenty of info on subs and enclosures..this will cost you around 5-8k..

total : 13+7+5+7+8=40 k at the most..hehe i know its way over board ur budget but we tend to go overboard sometimes..actually we can narrow it down to a better price based on ur inputs further and the brand u choose..these prices are just a rough estimate,so dont be hard pressed by them..

for the best setup as of date on a optra i would say it has to be that of Rudra's,but knowing that the setup cost him over a lakh im not surprised..

for the dicor :
points 1,2,3,4, all are the same only differnce being a change in the size of the speakers and the way u mount them..principle is the same basically..as far as the subs are concerned,viewing the fact that u will hardly haves space in the DICOR i would say go with the Image Dynamic subs as they require less of box volumes and are snug fit under the front seats..do wait for the others to chip in..im sure they will give finer details..