okay, I am just throwing this out there, not begging, just need a little help. I am in process of obtaining all components for a gm 4.3 tbi on my 77 2f, fj40 and, like most of ya'll , hit a snag with programming a chip for a 1227747 ecm. can't reach tom Quinn or chetw77cruiser, who supposedly gave program to tom Quinn, but from what I hear, their programmed chip worked really well. if I could get this eprom image and find someone to burn it for me I would be set up. didn't think it would be that hard with all these land cruiser people to find someone but evidently it is. well, so far I have a lot invested[no salvage parts] and am going with Downey's system and adapter which seems to be a good one. have a chevy astro van chip[which he recommended]. also said get chip from a 350 blazer, and nothing against him, but it goes against the grain of my thinking as a 350 is way bigger than a 4.3. but maybe I am missing something as I know nothing about it. just trying to do better than 12 m.p.g. which I believe is possible. I have a 2f with headers, 4speed, 4-11 gears, and its bored .020 over. weber 32-36. runs great, just sucks on gas. wonder, do all us newbies have to pay our dues? just kidding. man, with all these good folks out there, surely someone knows something. ya'll let me in on it. I would do it myself but I am not smart at all[barely can work my computer], much less do a complicated program. don't expect it to be free, willing to pay for something that really works as I would have to buy lots of stuff to tune it anyway. so anyway helpppp! someone please give me some good news. happy trails!!!