brake booster dimensions

[Jan-78FJ40]

Could someone please measure the dimensions of their minitruck brake booster for me? I would like to know the diameter, and the depth.
I put a turbo in my HJ60, and it is VERY close to the booster, so a smaller one would be great.

thanks
Jan

 

[2ndGenToyotaFan]

89 4Runner 4 cylinder. I think the V6 boosters have a larger bore (bigger brakes for the added wieght), but may also be larger in size.

Big round part 9 1/2 inches in diameter, and sticks out 3 1/2 from firewall (that's to the corner, it isn't quite a 90 degree, so it angles out a little on the way to the center)

The whole thing sticks out 12 inches from the firewall.