A G-50 is the trans that replaced the 915. This change took place in 1987, I think. The G-50 supports more HP and torque. It is also operated by a hydrolic clutch whereas the 901 and 915 were cable operated. The cost to fit a G-50 into a pre-87 car is high and requires extensive work of the torsion bar tubes and mounting areas. The G-50 weighs about 100 lbs. more than the 915.
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Paul
78SC Targa
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