Just Miata JMPPFPK01 - PPF Power Kit (Power Train Stabilizer) $129.99 B00ZGBXBY0
Just Miata JMCS01 - Crankshaft Saver (Crankshaft Extension) 1991-2005 only, not for 1990 short nosed crankshafts. Ignore 1 and 2 star reviews, buyers had short nosed crankshafts and didn't understand variation $69.99 B00ZGBXE2O