LOL, the seller says it took him several months (on and off) to bolt the cheap Palomar to the Lincoln... More likely that it took him several months to figure out he couldn't get the RFI out of the radios audio stages, powering them both up from the same DC wire without proper decoupling. The first time I bolted four Toshiba's to the back of an RCI-2950, I was fairly surprised how much extra RF bypassing it took on the DC line, to get them to cooperate with each other, being fed off the same wire and zero distance between them.
It takes a decent amount of LC filtering to keep 400 watts of RF from backing down 4 inches of power wire and finding its way right into the radios DC feedline. The typical symptom is squeals on AM and carriers on SSB. After perfecting this process, about 10 of those "RCI-29500's" were built for customers. It's been a while but if you ever see an RCI-2950 with a long Motorola "Maxtrac" heatsink bolted to its back, that's a keeper and has four Toshiba's biased up in class AB.