WANT TO FIX YOUR PROBLEM FOR GOOD? 140,000 Miles ago, my 83' 351 started giving me problems - sensors - "variable venturi" etc! After several expensive visits to the Uptown mechanic, (back in 1990),I junked the whole system, went down to the local junk-yard, and for $25 each, got a early 1970's 2-BB carb, and the good-ole-standard point-type distributor, bolted them in place, and...Wha-la... END OF PROBLEM!!! I've since driven this truck many a more mile, with NO MORE PROBLEMS (atleast engine wise). Oh, and, being an ole farm kid, -no, dont worry about hooking up the spark advance!!!! If it pings up hill, back off the timing a little! More questions? Bronco Billy 83 has 240,000 miles, still pretty, and VERY reliable!