interchangable
#2
You might have some oil pan issues, and intake issues. But if you do, just swap on the F150 specific parts that you need. Years ago, I did a similar swap into an 87 t-bird and put in a 302 destined for an F150, I had to reuse the t-bird oil pan and intake manifold put afterwards it looked and ran factory.
#5
my bad, I thought it was 99. In that case if I was him I would change it over to P.I.'s and the all aluminum truck intake and ditch the composite. A friend of mine had problems with the crossover and we found the aluminum one. 5 years later no problems. We installed E-Fans and a mustang temp sender in the crossover and it works flawlessly. Same set up as mine.