BMW M30, 3.9l capacity, base 635 E24 / 735. Bigger pistons and more stroke. Rebuilt from the performance-limiting Bosch Motronic to 3 Weber twin carburetors 45 DCOE and freely programmable ignition control Alpha Injection, installed and both tuned to test stand at VGS Viktor Günther in Cologne. about 265 hp.
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Complete engine with visible on the photos attachments,so carburetors,exhaust manifold, fan, alpha ignition electronics,wiring harness,Alpina air collector
Clean up a bit,install and off you go.