A LOT of people view the Z as a platform that is very suitable for engine swaps because of its large engine bay.
It is not uncommon to find people that have swapped the stock engine for a SBC, SBF 1JZ, 2JZ, RB Series, SR series, and many many more engine types.
But that ain't me.
My goal with this project is to stay as period correct as possible.
As a result I'm sticking with the Nissan engine the Z was born with. AKA the L-series.
In 1972 my 240z came with an L24. 10 years later the 280zx, the 240z's older bro came with the L28.
Basically the L28 is the same engine as an L24 differing only in displacement.
So yup you guessed it. It bolts right in.
Now if you put the head from an L24 on top of an 81-83 L28 you get a kickass engine.
All i need is an 81-83 L28:
Problem Solved