I've been using something similar for a couple of years, bought off Ebay.
When I bought my FJ40, it ran very poorly. Very Poorly. The distributor looked kinda maybe original, same size and shape as a Toyota equipment, but had no points, some kinda electronic something (maybe a pertronic?), and timing was an issue.
So, I thunked it would be a cheap quick test into possibly getting the engine running better.
And, it did run better. Still not really good... But, unlike the previous distributor and carburetor (because I also bought a similarly sourced cheap carburetor) it's consistent. Just OK, but consistently just OK.
I'm still eyeing a DUI distributor and Holley sniper EFI, but might rebuild my original carb first and do some more testing on whether or not the distributor's advance is actually working and if the timing is set to accommodate before replacing.
My FJ40 is low miles, so a couple years is maybe 5k miles, only out on sunny days for short trips, etc. But nothing's blown up yet.
And I did have to buy a new hold down, chevy style, move the heater pipe out of the way, and get new plug wires. Mine does fit without one of the "dimpled" big cap distributor rocker covers.