for both swaps there is no need to cut and weld any thing.
all you need to do is make and adapter plate.

get some 10mm plate aloy and drill it out to the bolt patern on the head and counter sink those holes in 5mm. use allen head bolts in those holes.
now drill the mani fold bolt patern in and cut threads into those holes.

bolt the plate to the head and then the manifold to the plate.


cheap simple and it works

alooy welding isnt an issue for me , hehe

so cutting up the manifolds isnt an issue , but was just trying to get out of doing it