Like my subject says, I'd like to swap a D15B2 USDM with a D15B JDM
motor. From what little I've found, this JDM motor can go into my 91
Civic DX, but I must use my throttle body, intake and exhaust
manifolds.

All I want is a replacement motor. I don't care about going fast and
furious, I just want to take out my blown original and get my car
back.

There's conflicting info about the D15B that causes me to be a bit
wary, however. Some say it is a VTEC motor with substantially more hp
than my D15B2 (90hp vs 130hp). If it is VTEC, how will my ECU be able
to run this motor. It's also supposedly MPFI, whereas my current
motor is DPFI. These differences are pretty steep in my book and I'm
trying to figure out if these motors are similar enough for a direct
drop-in.

If anyone has any information I'd really appreciate it!

btw - the following link is the company I'm considering buying the
motor from:

http://www.nippon-motors.com/honda.htm

so, just a few questions.

1 - running the vtec is possible, but do you think i'll need a
different ECU?

2 - does the vtec require MPFI?

3 - is converting to MPFI a pain?

4 - so the D15B JDM will drop right in (if i decide on a simple swap),
using my intake, exhaust, throttle body and ECU?

i really appreciate your help!