Help - Schumacher won't get back to me, how can mount the 440?

I have a 73 Dart and am swapping out the 318 for the 440. I ordered the swap kit from Schumacher in November. They continued to tell me 2 or 3 weeks. Now they stopped returning my emails and their phones have been down for months. What are my options if I don't have the swap kit? I can't find any other swap kits and I have not had any luck finding a big block K member. Thoughts? Anyone selling mounts or K members? Thanks, Nick.