I have a 1995 K2500 5.7L that i put into a 1996 k3500 that had the diesel 6.5 in it. The 95 had the ecm 16197427 BJYL. The original truck had the 4l60e transmission and the newer truck that the engine went into has the 4l80e. I'm looking at prob either a OE or 31 bin file but I'm unsure what to start off with. This is not going to be anything too special, delivering firewood, work truck etc. It does have a lower stall converter at 1800 but from the research i read it should be fine. Anyways any help pointing me in the right direction would be great.