Here are some pics of my E9 and M6.
I have owned the E9 since 1989. It has been restored over the past 16 years and has been back on the road for 18 months. It has a 3.3 crank and 10.5:1 oversize pistons making 3.4 litres. Balanced, some head work, extractors and a five speed getrag. The interior is the dark blue velour - which I understand is a rare combination (most inka cars had black or beige interiors).
I brought the M6 in from the UK and have now owned it for four years. It is a beautifully refined car, but still very fast.
Enjoy,
Rod
Brisbane (Australia)