I picked her up back in October. The 318 was seized but I got her freed up. I've been working on the brakes and just started ripping the interior out yesterday day. I've done water pump, new gas tank, electric fuel pump, new fuel lines, carb rebuild, gm hei, new tires kinda. Where in Florida you about.
The 1978 Dodge is a one-year-only model with many one-year-only parts, or so the parts books would have you believe.
The 1978 Dodge uses the front sheetmetal of the 71-77 vans, but the 79-up dash and rear sheetmetal. The front suspension is unique to the 78 model year (I believe) but the dash parts are compatible with the 79-up parts and the sheetmetal is compatible with the 71-77 or 79-up depending on what you are working on.