OK just reread your post.
Head gaskets are OK, have you done a compression test ?
I did a swap on an'88 4x but nothing on the newer designs but other than special headers most 5.0's are a bolt in.
L&L Products makes...
My first was an '88 STX, 4X, High Rider.
After a year or so of owning and driving the 2.9L, 5 sp, and getting 15 mpg at best I swapped...
Why get rid of the best Hood Ford has ever made, maybe second best the GT500 Mustang hood was a good one for sure ?
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