Emergency hepl needed please

Hi i have a 2000 honda civic si... which is lowered and since the winter is coming i need to bring it back up and need a set of springs and struts. but i don't know if my engine is sohc or dohc..Here is a picture of my engine and could you guys tell me if it is sohc or dohc.....

and if anyone as stock springs and struts that will fit my car.. i am willing to buy it
also my gear box is really stiff going into reverse and i really have to use alot of power to put it into reverse... does anyone know what might be wrong and also i was driving today after warming up my car for about 5 minutes and realized in the middle of my drive that my engine thermometer went to cold and stayed their for a while and when i starting playing with the a/c it went back to normal and then went back to cold and it would got up and down.... doees anyone know what that might be

thank you

http://www.automotiveforums.com/vbulletin/showthread.php?t=1072716
on this has the picture of my engine

please help
please help