Seeking any information regarding changing from '65 Nadello to Lobros. 901 output flanges on the Nadello look to have same spline count, but center bore is larger than a '68 Lobro I have. Am wondering if there is a direct replacement Lobro, or does one typically have to machine to fit?? Also wondering, Did the 911 & 912 share similar transaxles and drivetrains for similar years? Have searched & Googled without luck---Thanks very much Steve