360 block limits

Only problem efi is not more complex than a carb IF you know how to tune.
can you please elaborate on this? I'm not sure how you could've come to this conclusion.

EFI can be a comprehensive fuel metering system which can be setup do adjust fuel flow in the tiniest of increments.
we're talking variable pressure, variable flow and variable duration down to the 4th decimal of a millisecond, and injector valve lift measured in microns.

And it can all be calibrated based on almost unlimited number of specific individual variables in atmospheric conditions compared to the engine's operating conditions.
From memory my haltech unit runs at 50 mhz.
That's 50 million calculated processes per second.

In comparison, Carbs have 3 venturi circuits, air bleeds and an accelerator pump. maybe a choke, too.

So yes, i think there is a pretty wide disparity in complexity between the two systems.
Too many guys who don't know how to tune carbs slap efi on because they are told about all the benefits and reliability/tune capabilities. those same guys start to make power and blow **** up.
sometimes, sure. This does happen.
But you're making it seem as if "blowing **** up" is predominantly an EFI issue when I don't think that's accurate.

The idea that a blown up engine would have stayed alive if only the owner had stuck with his trusty carburettor is something I don't really get behind.
Calibration error is calibrator error.

We don't get to blame EFI for a "bad tune" any more than we get to blame carbs for a "bad tune"

The only difference is, EFI can be tuned in ways which carbs can't.
When a carb is presenting a limitation in accurate fuel metering, such as when facing a fuel distribution issue.. switching to EFI is an excellent way to overcome that limitation.
Every single car I've seen at any local drag strip (we are spoiled and have 5 close to me) that have blown an engine were power adder cars with efi period.
I'm guessing that might be because nearly all power adder cars are EFI. And for good reason.

blow through carbs are something I wouldn't personally recommend to anyone who values their sanity or their engine.
Around here there are not that many fast guys still running nitrous but all of the ones I know have a carb under the hood.
This makes sense to me.
My personal preference is forced induction over nitrous, but if I was hell-bent on keeping a carburettor on my engine it would be wayyyy easier to get it to be happy around town, and survive on the strip by adding on nitrous instead of boost.

Boost has all those air pressure and temp fluctuations, nitrous has fewer variables to account for.
again... blow through carbs are just a big compromise to me.

But other people run them and love them, I do see a lot of them lunch motors though.
So it's not just an EFI thing.