The 61180 is beautiful. USA got that dissy for 76.5-77 model years, but the vac advancers are dying on them and toyo discontinued the part, now that they're old enough to need replaced.
This would be a drop in for USA 75-77 2F, with the added advantage of converting the 75-76 from vac retard to advance. It would also drop into any earlier engine, though they theoretically should have the tiny 61080 F distributor.
The 61180 can be converted to pertronix electronic, but it takes a weird kit. Mark A knows which one to use for 75-77 dissy.
I think it is possible to drop in the Toyota electronic ignition by changing out the breaker plate and swapping the point cam for a trigger wheel. Haven't done it yet, but that's essentially what Denso did in 1978.
If the vac advancers could be bought from Toyota, it could be used to save a bunch of 75-80 USA dissys that either need swapped from retard to advance, or need a bad advancer replaced.
It's all good!