its drilled out to fit the newer B bolts ill have to check in a bit forgot the size.
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99 civic SI
13.8@99 Type R on Drag radials
88 civic DX
12.8@104 GSR on slicks
88 civic DX
13.0@109 H2B on Drag radials
94 civic DX
11.9@112 on slicks
GRIP not Drift!