Getting ready to swap a 5.7 into my 73 Dart Swinger

Well thank you and I am using the modern transmission the sheet metal Fab there will be easy for me as ive done a few 50's trucks with ls swaps and can tig quite well. I actually make headers at a f e power here in corona so when that bear comes along I'll handle that Well. The crossmember for the trans worries me slightly. The body flex and drive shaft are another 2 worries if i get it driving i can take it to my second job untouchable metal work in Colton where we do full restorations. I just cant leave my car there. Im ordering a oil filter block off plate and going to try to rework a oil pan to save 250$$

Fantastic!!! You're an experienced sheetmetal worker!!! Here's what I did. Before I ever even got my Swinger I knew I was going to build my own frame rail connectors. This makes a HUGE difference in the car's stability. PLUS it creates 2 bullet-proof connecting points for your new transmission crossmember. This won't be hard for you to do at all. Go get em...