What are the main failure points? Just curious. I've found it interesting that the 100 series seems to have more issues than the 120 platform. The 150 seems dialed other than some trans issues probably caused by poor cooling and cam tower/valley plate leaks. Is the 200 also more issue-prone than the 150?
Overall I've rectified most of the issues with my 120 (cracked exhaust manifolds, cracked dash, poor trans cooling) as involved but not impossible DIYs, but haven't yet rectified the weak 8" rear end. The electrical system is complicated by highly reliable on a 120 and a 150.
If you can't tell I'm a big proponent of the aged-but-sorted 120 platform

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