Wasn't as bad as I thought is was going to be, LMR and CJ pony parts have some good vids on it.
I was able to do the dash by myself, it's not that heavy but if you have someone that can give you a hand it would be easier
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Best done on a day your in a good mood and weather is moderate.
Back to the flow restrictor. Replaced all my hoses last summer and ordered a Ford restrictor from American muscle, pictured below but it was too long, not enough room before the hose bends 90 degrees. My old hose had a small brass restrictor the same shape as the yellow one on page 1. I just cut it out and reused. And yes from what I hear it reduces flow because the heater core can’t take the pressure.
I wonder how much longer my 15 year old Ford heater core is going to last.
I sure as hell have no desire to do that shit job again.
Did it twice so far in this car with AC.
Father has a 97 Accord that still has the original yet these Mustangs seem to eat them.