update. Bought new oil, drive the stang around neighborhood for 20 min low speed, I dont want take on street or highway, cause car have no tag and insurance, will register tomorrow.
anyway these dumb engine, have 2 drain plug, I just take 1 out, and it drain about 5 quart, after done everything, i search on google and found out the other plug still hold some oil left.
second, these space is way to tight for big FL1A oil filter ( i use pure 1 left over from my jeep 4.0L ( glad both jeep and stang use same oil filter ), anyway is their a small version of FL1A ? I want use a small oil filter cause of the tight space.