Nitrous on a 318.....how much will it take

This was back in '89. I had a '74 Barracuda 318/3sp I swapped in a 340/4sp with a Cheater plate. Then I broke some ring lands when I ran out of gas in a bad spot and a nice lady let me take her old, low octane lawnmower gasoline. I had to drive out of a steep valley to reach a gas station... I had a street race that weekend so I put the 340 top end parts on and into the 318 stock bottom end, painted it blue, and stuck it back in with the 4sp. Same tune, same everything else. The car was ultimately totaled 6 months later in a wreck caused by a drunk teenager (not me...) and the engine was still in it at that time. In fact, only one guy knew I had hurt the 340, and the 318 kept the winning streak of that car alive. With it's 340 heads (gasp) and Thermoquad (double gasp)...
Nitrous likes big combustion space and controlled combustion. So low compression, short stroke engines will do well with it if the hard parts can hold it. I also know of a 307 Olds in a big GM sedan that has 250hp on it. It's about knowing what you have, and what you're doing. I still have a baggie with bits of those rings and lands that hangs above a work bench as a reminder of being overly aggressive on a street car.
The same guy that struggles with driveability issues and tuning probably shouldn't be just bolting on nitrous. Especially bigger hits as "your results my vary"...lol.