So I am doing a resto-mod on 1970 challenger340 non A/C, I will be installing vintage air. I do need a new dash pad, so I thought why not get the A/C one and integrate the vintage air system to it. I already called vintage air and they have the air vents for that conversion. However, my question is would I only need the dash pad and install it on my frame or do I need a new frame too?