Dang it, what have I done! I just opened a whole can of worms.... Just made the downpayment on a complete 5.3L However, don't expect any more progress than pulling it out and putting it on the engine stand for now.... I have zero intention of putting it in until next fall when the wiring is done and ready to go. I plan to take a crapload of pictures, and do a very in-depth writeup of what exactly has to be done to install the 5.3L into my 80 GMC 3/4 ton 4x4, so my thread can be used as a reference for anyone who is interested in a GenIII engine swap in the future First, time to get the TPI running for this summer! Bring on the head and cam swap!