Swaps are always fun! My first was a V-8 Vega. Well, go-carts and minibikes before that ...
I'm rebuilding the SPI, so it will be interesting to total the costs. In my old age, I now prefer to keep an otherwise good car "numbers matching".
Interesting decision to install a used engine as is. I always at least go through such, and usually replace the rings, bearings, oil and water pumps, belts, etc. unless I previously knew the engine really well. But so far, so good with yours!
Fixed Up a white 2001 P-code SE Sedan
including rebuilding the SPI (see my threads)