I have few questions and concerns im building a 1996 s10 blazer originally has the 4.3l v6 with a 4l60e im swaping the motor to a 5.3l out of a 2003 tahoe and im wanting to keep the stock transmission for right now will the transmission plug on the 5.3l harness plug into the transmission and my next question is the original fuel lines on the blazer what fitting will i be needing to hook up the fuel lines to the motor i have been looking at 3/8 and 5/16 compression fittings from russell or fragola.