i bought this old 1990 gmc with the 4.3 and 5 spd for scrap but i found out it ran. so i decided to put it to work but now have upgraded my trailer and the poor old 4.3 cant do it no more 40mph is all she will do when its loaded. so i had a 5.7 i was gonna put on a trike but figured it would be better use in truck. so a buddy gave me a ecm with service number 16156647 which on here i found was for 2.5 s10 (why he said that would work for the 5.7 i have no clue.) with a dleco chip BAZC and handed me another chip ASDV in a static bag labeled 87 chev pick-up both chips come up with error on the BCC look up on here and havent tore the ecm out of truck yet so no info on that yet cause its pretty much a daily driver. so my question pretty much is... will either of the chips in combination with this ecm work with the 5.7 or will i have to hope the one in truck will work or will i have to fund a ecm with set up similar to what im converting to?