The 1993 Honda accord, I believe, does NOT have CD Player. It only have cassette and radio player.
http://www.installdr.com/InstallDocs/Honda/PDF/466053.pdf
Follow the instruction in the link to remove the plastic cover http://www.installdr.com/InstallDocs/Honda/PDF/466053.pdf
http://www.cardomain.com/ride/731216/2
More information is needed on this...is it a stock Honda alarm? What year (or generation) Prelude is it for?
stock springs
6.5 fron and rear
Whatever Honda could get cheapest when they ran out and had to order more.
* Remove the ashtray and ashtray holder * Remove the radio and mounting plate screws and lower the radio and unplug the electrical connector and antenna lead then push the radio out of the dashboard
6.5" front and back
150 at 5,700 rpm
Try this: http://mjmautoinnovations.com/honda.htm