Which engines fit ???

[PortisHead]

Hello to everybody.
I have a honda civic ESi 1.6L '94 model with the d16z6 engine (125 HP)

My question is:
Wich engines would fit in this car without any modifications ?

P.S.
The transmission is automatic.

I attached a picture of the car.....

 

[turbo sol]

any d-series motor...