The best "bolt in" seem to be the Dakota seats. If you have any fab equipment, the sky is the limit. We are running 3rd gen Camaro seats in the '79 after floor replacement was complete. Had a blank canvas so all was open and the IROC seats were what we had on hand.
I have not seen the LR seats discussed before on other sites, they may be the next perfect fit???
79 CHIEF 3"RC 360/TH400/QT-PT (sons)
82 HONCHO SPORT SIDE Stock (mine)
02 WJ LTD OME-HD, Rubis, 4.7HO/QD (mommas)
02 WJ LTD 4.0 2WD (baby girls)