i have for sale a throttle body off an 03 s2000. its a 62mm tb,which i believe is the same as a jspec itr tb (dont quote me, but heard they share the same part number?).
no sensors, has a smaller civic tb wheel (quicker response), but you can replace it back by putting your b, h, etc one back on.

im asking only 100 shipped

a little something i found for comparison

b18c1 60
b18c spec R 62
b18a 58
b18b 60
b16a SiR 58
b16a Sir2 / b16a2 60
b16a3 58
b20b/z 60
f20c 62
d15b7 56
d16a6 55
d16y7 56
d16y8 56
d16z6 56
ZC 55
d16a1 55
d16a8 55
h22a / h23a 60
f22 / f23 60


So it's the same size as a type r

 

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