I plan on installing a 6.1 Hemi in a 1969 Charger. I plan to start looking in my local wrecking yards for one. My question is, is one version better than another ( Charger, Jeep etc. )? I mean will one from a particular model work better than another as far as the location of the pulleys and where the power steering, A/C, and alternator are located. I seem to remember a post saying that the 5.7 truck engines worked/fit better in the older cars because of where PS, A/C, and alternator were. Can you switch the pulleys from a 5.7 to a 6.1 ?