You’d spend much more time building the motor anyways. The swap in total can take you anywhere from 6 - 10 hours COMPLETE.
And it’s a direct drop in, you just have to modify the wiring harness and create a rig to route your heater hoses back. (JDM is on the opposite side)
SR’s are great for a dd, very reliable, and parts are readily available. It’s almost like the B-series for Nissans. TONS of support.
And all of a sudden, if you want “cheap”, you’re better off just staying with a stock ka24e. Either route will require at least $3000. Assuming you can do all the labour yourself.