Lots of things can be mixed/ matched on these cars- my Euro 635 has M90 block, 92 735 3.5L head & motronic...

M90 ? I am not familiar with this engine... In Germany I get any kind of engine ... S38 for 1500Euro ... or M30 in any form...

I would like to know which m30 engine is the strongest and fuel economical... And capable of some chip tuning...

And also which 5 speed gearbox and LSD would be the best for my needs ? I need to cruise economical at 130km/h on our autobahn... and also like to ride some corners fast...

And another thing... I guess it would be best for me to buy a e32 735 and just transplant everything into e24 ? As I understand, the engine fits, the wires are long enough ...

Thanks for your help !

Best regards, J

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