Pretty sure someone on here got a Novarossi recently for their savage. My have been at RCNT. I'll check my past emails to see if I can find it.
I've only been running LRP's and OS's for the past decade with the periodic traxxas engine. Tried the first axial .28 way back in the day, it was awful after a gallon. Couldn't tune worth a crap and I sold it for parts. Stupid thing looked like new inside. I ran the old OS21RG for many years before stepping up the LRP28. Also ran many XTM 24.7's. All very tame engines for today's basher. Also tried a few SH 28's off ebay, the old black/brownish head and the newer blue-head ones. Also the Losi M26SS in the aftershock. That was the rig I put my first LRP28 in.
None of those held a candle to the power of the LRP28. I've had 3 LRP28S3's over the past 10 years and currently have an LRP30S2 in my savage x. My big block revo has the LRP28 in it still while my other revo has an OS21Tm. I have a picco P3 in a drawer that is brand new in its box and a second LRP28 in a drawer that I was fighting with on my savage-x until I replaced it with the 30. Then had the same issues that ended up being the fuel tank. I just never put the 28 back in. Can't imagine it has more than a couple gallons on it, if that.
Found the thread with the novarossi:
https://www.hpisavageforum.com/threads/dwindling-engine-choices.18516
Has to be a hell of an engine in a savage. I've seen video's in the old days of novarossi's in buggies and man do they scream!