I have a 92 civic cx hatch. It has the d15b8 8 valve motor. I installed a d15b7 16 valve head and a 94dx computer. power got better. (head and stuff came from a friends blown engine.) Althought I have a 90 d16a1 from a co-worker with a blown head. I was wondering if I could use some of th d16 parts ie cam, valve springs, and rods to increase compression or more valve duration. If possible let me know.If not may be where can I get high comp pistons or mild cam or any tricks I can do to my d15b7. I am currently porting a d15b7 head and intake myself. hope some can help me. aloha and peace