Thanks for the replies already. This is for 1/8 offroad by the way.
I have been looking at the nova 367 engine, looks like a winner specially with all the stuff that it comes with.
My last engine was an RB WSII, and I don't think those are around any more. I don't know if parts are available for it, so I was also considering the C6BBT or the WSIII
Thanks.