I've found a 92 civic dx hb for sale. The owner told me that the old engine died and some garage changed it to a "99 1.6l". After doing some searching I've found that the original engine is a d15b7 and the new one is probably a d16y7.

My questions are:
Will the d16y7 run properly using the car's original computer?
Is this swap possible using the old trans. or am I being bullshitted?
What should I look for to detect issues?

Any other relevant info or suggestions will be greatly appreciated.