So, the Japan Racing JR6 wheels arrived at my dealer. Specs were according to OEM SN95 wheels so they should fit. And they would. If they would.
I said to my trusty mechanic that let's check that they are round and straight before putting tyres on. And indeed one was round and straight.
One was perfect, second was OKish, third was out of round and fourth was out of round a lot. Looked like they had put the rims in machine not straight. So they all are going back to factory.
That is quite sad as I really liked the look.
As replacement wheels would take at least two to three weeks we agreed to cancel the order and install the Goodyear Eagle F1 AS6 on OEM wheels.
The old tyres were some horrible Antares M+S. With the Goodyears Mustang is now a completely different car.
Four wheel alignment still on Thursday and I think that'll do for this year.