ORIGINAL: ssj2
The budget problem isn't really an issue in my case because if i need something I kinda need to suck it up. I appreciate all the information, but is the Sirio .30 or OS.30 VG an engine I would be good with? If not what specific engine would be the best for a Mammoth ST all around? (Savage .21 rotostart compatible) Thanks again!
THe Sirio .30 and OS .30VG are good engines I'm sure, but I doubt the backplate will fit. The latest review in Xtreme RC Car isn't 100% positive on the OS .30VG, though. They were somewhat concerned about the durability of the ABN construction. I would wait a bit on it before spending the cash.
IMHO, the best backplate compatible engine would be the Picco .27 big block. At less than $200, it isn't that expensive either.