I prefer a 4 with 6 power and less the 80 to 100 pounds behind the rear axle line. Mines a 2.4 and here is a just finished 2.7. I'm in this for the drive and could care less about the vin on my 67 912.
Check out the CMW custom heads and LN Nickies on the 2.7. It also has titanium rods. My 2.4 has titanium valves.
They are looking for 240 hp on the 2.7.
Chris