V Belt on Magnum are my thoughts clear

The answer to your questions is yes. I did this swap also in my Scamp your also gonna need LA 340/360 motor mount brackets. Listen to your builder and go with the EQ heads don't waste the money on Edelbrock's you can use that extra money somewhere else on the car like a good electric fuel pump ect. Good luck with your swap you'll love the end result.
Yup good to go on the motor mount brackets.
Good to know that my thoughts were correct. I am gathering parts right now.

Ne EQ heads are not a performance head but for a mainly stock 5.9 with a cam upgrade he said that the new EQs with some extra work on their end (polish and porting), that it will be fine for a fun reliable cruiser. I doubt this car will see any track time. Just fun on the back country roads pretty much.
Going to do some more research and talking for sure.
Thanks for the response

Anymore information on your swap? Snags you ran into or things to look out for?
I am going to rebuild and use the 904, and i have a 8 3/4 housing and 489 case that needs to be built up as well replacing the 7-1/4.