Mancini Extra Heavy Duty Rear leaf Springs

I also saw those.
My concern with a stock ride height spring is tire clearance.
Not sure if they will work with 275/60-15 ?
I bought Espo springs. They have 1" and 2" over I believe. I bought the stock ones for my 66. I mis ordered and got the 5 leaf and not the 6 like it was built with. Here's a photo after 10 years and some 235/70-15's on the rear.

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