Change engine or Buy car with the engine?

Hi tsikot it's my first post here. :)

I just want to hear your opinions regarding with my plan of changing my engine into d15b vtec. My current ride is a 92 civic hatchback with ph12 engine and i already put some money on it.

My Question:

1. Its better to sell my current car and buy a hatch equipped wiith d15? (considering it's mileage).
2. or change engine which cost around 65k and low mileage from japan?

hope i did right post in this section.

Thank you.