All good info.

The spare parts car ('88 crx) had abs, so when I tried to fit the prop valve and master cylinder a couple of hours ago...it don't fit.
The rear hole (of 2) on the master cylinder is a larger size than normal so the lines won't mate up. The master cylinder also has ABS stamped on it.
Also what looked like the proportioning valve, isn't the same set up. It is 2 in 2 out, instead of 2 in 4 out like the stock civic one. So it's fairly useless for me.

The crx front callipers however, were a simple bolt on exercise.

I also noted the booster off the crx is bigger than the civic. Both nissin items.
Civic: Nissin NM-205V-3
CRX: Nissin NM-230V-4

I'll leave the stock master, booster and prop valve in and see what else I accumulate before its up and running.