$500
For an sbm is apealing. Then you need a different tranny, different k-member, throttle cables and kickdown linkages and bigger torsion bars yadda yadda yadda....
you can get a trans for a couple hundred bucks. you could sell the running slant and trans for 100-200. you dont need a k-member. they make mounts. throttle cable will still work. kick down linkage can be found at most wrecking yards. most times the engine will come with it. slant and small block are nearly same weight. you can upgrade tortion bars if you want but not mandatory. I know everyone is gonna jump on me for that but guys run big blocks with slant bars and it handles like a shopping cart but they handle like **** to begin with.