Botched tub job...can ya'll guide me through this?

[team39763]

I bought that $173 aluminum tub kit from Autoweld and I can't seem to get them in correctly. I made the template out of cardboard and test fitted it. Obviously I measured wrong and did countless other things wrong. Can I have some tips on how you guys did your tubs? I only have a few days to get this done before it's too late.

The inner bedsides are cut out. The original tub area is lengthened to 44 inches. The bed has been widened all the way to the frame. Should I be looking to attach the tubs to the frame? I'm completely lost on this project and I don't want to throw away the money I spent on these tubs.