[Barry_R]

As noted there are plenty of bore/stroke options for the 427 these days. The 4.250 is decidedly the most popular, but a 4.125 is a good option if you want the motor to feel a bit "revvier". At 4.250 bore the 4.125 crank will get you 468 cubes.

The advantage of the 4.125 or 4.250 crank is the use of wider and smaller diameter BBC rod bearings along with the longer rods - makes for a shorter lighter piston.

For EFI we've done FEs with a variety of multiport systems. I personally would not bother with the throttle body stuff - all teh expense of EFI with the fuel distribution of a carb - worst of both worlds. Go multiport. We've done the multiport with teh Edelbrock Victor intake, the TWM "Weber lookalike" deal, and even with a converted dual plane. Lots of internet experts claim that a EFI dual plane ain't a good package - but mine made over 500 lbs torque at 2500 and 699 horspower at 6500 on 433 cubes.

For EFI controllers we've used the FAST EZ-EFI, which worked well but took some getting used to, as well as the much more sophisticated FAST xFI and Big Stuff 3 systems. The latter two provide full control of ignition and fuel parameters.

The hydraulic roller option is a good one - your block is drilled for lifter oiling. But it does limit you to 6200-6500 RPM at the most. Going to a solid has its own issues but has an RPM and peak power advantage.