Engine replacement question

[wags70ss]

I have a 92 Paseo with the 1.5L engine & a manual trans. It belongs to a customer. The engine is bad & he wants a new engine put in. I have been told that I have to get a manual trans engine, or if I use an automatic trans engine, I have to swap over the intake & exhaust manifolds & the "water castings", whatever those are.

Can anyone tell me if all this is nessessary with an automatic trans engine?

[Tercel GTS]

No it isn't, they're all the same. You may want to keep the temp sensor though as I've found they give unique readings.

[96paseo]

Automatic uses torque converter and manual uses flywheel. You'd just have to swap parts to keep the MT setup if you got a motor split from an auto tranny.