What are these?

Hardly an expert, but I don't think "lean burn". I see a Mopar ECU for spark under the steering column. I think "lean burn" was essentially the same "Spark Computer Box" in my 1982 Dodge Aries. That was mounted on the inner fender, but a similar box w/ "Lean Burn" label was mounted on the air cleaner in small-block engines, at least from what I have seen in junkyards (usually bigger cars). This box had a vacuum sensor that looked like a vacuum advance pod on the side. The distributor had no weights or vacuum advance since those adjustments were done in the box via electronics. It had a 3-wire Hall-effect pickup w/ a metal shutter wheel. Replacement spark boxes were pricey. I bought one once, though the problem turned out to be the crappy Molex-type connector they used on the box. Thank god for the later Weatherpack and Metri-pak connectors.