Thanks to all who responded. I stand duly chastised for blaming a DPO,
only the various catalogs do not show those nuts. I got the manifold off.
It was so badly cracked I used a chisel and grinder to remove the lower
half so I could get clearance to apply leverage to the offset box end
wrench I was finally able to get on the nut. We theorized a clogged
catalytic convertor caused the crack, and nearly welded those nuts on the
studs. There was no way I could break them loose with an open end wrench.
Anyway, It's off, am anxiously awaiting the new manifold to arrive from
TRF. Thanks again, Gary
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