Swapping in a big block

Hey I have a 74 Scamp too!
I am dropping a 413 into mine.

As far as mounts go Schumacher has bolt in units for $159.
Or you could use a motor plate / elephant ears and midplate. $$$$$

Trans. will bolt right up to the crossmember. 8)

Cheap B Body headers will fit with the low deck B engines, just need a few dings here and there.8) I cannot go this route unfortunatly with my RB 413.

I would look into a Dana 60 rear end for the power you plan to make. At the very least a 8 3/4. The 7 1/4 or 8 1/4 thats in there aint' gonna cut it!

Don't forget your subframe connectors.