Hi Churchy,
My understanding of wheel offset is that its the measurement between the inside mounting face of the rim and the centre line of the rim.
There's a better explanation on the vintage wheels website(
http://www.vintagewheelsus.com/tech.html)
What type of wheels did you end up going for??? I am also not too fused about a deep dished wheel and am currently exploring brake/wheel options. I'm also still debating wether or not I should change the front wheel stud pattern to Ford while I'm trying to work all this out. Has anyone else done this and what issues should I be considering??
Luke....