TR4A throttle body size

[AndyM]

Collecting bits for my efi conversion on the 4a.

Engine nicely run in - 89mm slugs & liners, Balanced bottom end with Maxpeeding steel rods, fully worked head with big valves & high torque cam.

Going to go with Sherryberg Jenvey copies. Thinking of 42s or 40s - I know if it were on DCOEs you would use 45s but they don't need to be as big for efi as the venturi/choke size & gubbins isn't the limiting factor.

Any thoughts from those who have done it?

Andy