Arrived this morning.....
So my vehicle should follow the flow diagram path, yes, yes, no. Assuming it fails the BET test, which is likely.
Any haynes built using an engine from a vehicle manufactured during 1995, before or after July 1995, will have an Engine manufacture 'Effective Date" of 1st January 1995 if you can prove the engines date of manufacture as the letter above does. Useful to know for other builders as older mx5 cars get rarer, which will probably happen soon I think the way the sills rust through.
