Yeah, I realized after I posted that I was wrong lol. Here is all the honda tb sizes

Honda Throttle Body Sizing Chart

Inside Diameters (in mm)
d15b7 - 56

d16a6 - 55

d16y7 - 56

d16y8 - 56

d16z6 - 56

ZC - 55

d16a1 - 55

d16a8 - 55

b18c1 - 60

b18c5 - 62

b18a - 58

b18b - 60

b16a SiR - 58

b16a Sir2 - 60

b16a2 - 60

b16a3 - 60

b20b - 60

b20z - 60

h22a - 60

h23a - 60

f20c - 62

f22 - 60

f23 - 60

 

I was told that any D, B, H, or F series TB will fit any other motor. so they are interchangeable