Tohatsu 40HP TLDI Throttle Body Same as 50HP? (See Pics)

[rustnrot]

I may be installing a replacement 50 HP TLDI computer in a Tohatsu 40 TLDI engine. As you may know the only difference between the 40 TLDI and 50 TLDI is the computer (ECU) itself and also the Throttle Body.

I am posting pictures and dimensions of the 40 TLDI throttle body below to see if anyone has measured a 50 TLDI throttle body to compare to. It may be as simple as the restriction plate in the front throat of the 50 TLDI is either not there or has a larger hole in it. Or it could be a larger butterfly and bore through the casting.

FYI, the bore of the 40 TLDI throttle body itself (butterfly diameter) is 40 mm (as pictured from the rear of the throttle body). The hole in the restrictor plate is 24 mm and the outside diameter of the restrictor plate itself is 2.5 inches (as pictured from the front).