.
. We
currently have two versions of this part. They vary by
the diameter of the hole for the bolt that goes through
the alternator "ear(s)". The 117-09 has a 10mm hole; the
117-15 has an 8mm (approx 5/16") hole. The other two bolt
holes are 8mm on both brackets. Thickness is the same on
both brackets.
Datsun
Roadster Alternator Parts from Rallye Enterprises, Ltd.
Datsun
SPL311 SRL311 Alternator Support from Rallye
Roadster