5 lug swap?

[raging squirrel]

I am looking at various wheel options for my 79 Brat. I have considered finding rare alloy wheels with the 4x140 pattern, redrilling 6 lugs ( hard to find 13" or 14" alloys), or doing the 5 lug conversion. The 5 lug seems to have the most appeal since used 5 luggers are pretty common.

I searched a little and was treated to an overload of non related information and some related info, but not much specific to these older cars. What is the most simple way of going about this? Is it mostly a bolt on swap of hubs, spindles and brakes? What about hub spline counts?