will a d16a1 go right in and will ever thing bolt and hook up in my 90 hatch

it should, but if you are going to convert your car to OBD1, you need some other stuff

Everything will bolt up, If your hatch is a si then plug and play with the wiring. But if it's a dx model, it's gonna be a dpfi, so you will have to covert it to mpfi. And also use the pm7 ecu or pm6. If you keep as it then it will start, but like Integraguy04 said if you want to convert your car to obd1 then you will need more parts.

its a dx so i just need to switch to obd1