questions

Ive been told yes and no one these questions so I thought I would come here to get a straight answer. I want to swap a sohc vtec head onto my d15 motor, also will a d16, flywheel, clutch, and tranny fit on my d15. its going in a 89 hatchback. What kind of modification will this take?

come on anyone?

most d series partes bolt in themselfs and most b series parts bolt in them selfes but can not bolt d in b and can not bolt b in d. so you can swap the head for d16z6 vtec in your d15. the cluch and tranny will work but iam not sure if the flywheel will work or not but the best for you to install the tranny and the cluch and the flywheel for the d16z6. because the tranny of the d16z6 is shortest in gear then the d15
.

thank you for the info, I am more up to date on the b series motors espesially b16a1, not much into the d series motors but I can get a bunch of stuff off of my friends d16 for 150$

hi can anyone help me i was wondering if a SIR engine will fit into a 90 civc hatchback and if the mounts are the same?

yes it will fit pretty easily, no the mounts are different, you need the mounts for the SiR