I know of car that’s a 2.8 with a 6870 with a 1.15ts rear on it and he’s claiming he’s all in at 4,100. So Even with the smaller engine it’s sounds like it’s not going to be a pig but you won’t be riding the wave or torque you are able to currently
I’m sticking with a 26 based block for many reasons, not having to redo any of the fab work is a big plus and also I’ve always liked the way 2.8s drive