I wouldn’t break in that engine with synthetic oil, I would run the Brad Penn break in oil for the first 500 miles. I also run type F trans fluid, although Dex3/4 is also acceptable. I just answered this in another thread somewhere...
I had to have my trans removed by my trans guy due to his employee not using the shaft I provided for the a995 lower gear planetary I gave him to use. When he saw the brand new blue trans fluid I had in there that I paid $6 a quart for, he laughed and poured it down the drain. He put in type F, because at that time it was as close to the Chrysler specific fluid as you could get. There may be better choices now, but not according to Hoxey, who was widely considered the best trans guy in my area.
for plugs I always run the 12 or 14yc champions.
