Putting in a SB

mopar was smart as today the 300 and challenger and charger are all on same frame. old a and b bodies had a K frame to there selves A- body early had a fd up idler arm. new one sense 67 don't at 150steering not only went by fast sucked as my widowmaker KAW &%) TRIPPLE. u can change k frames but use new parts. idler arm has a bolt that goes throught it and not bolted to k frame. am 64 worked 4 gm 25 yrs as front end alignment person. listen or die happy day