Purely out of interest, anyone know if fatboy wheels would fit a sporty? Would look tuff on my 48

Not without some modification mate. I highly doubt the 48's swingarm, forks, fenders etc. are wide enough for a straight swap

I have seen a guy on a iron 883 who done it . Looks nice

it works

http://www.hdforums.com/forum/sportster-models/969197-new-fat-bob-wheels-on-48-a.html

Think I'm seeking 2 front fatboy wheels, prefer 16'z but I reckon 17z will work. I think using 2 fronts will allow the use of the same size tyres.

Mite be easier if you stick to the early fatboy rims. The '07 on wards with the 200 rear end will be much more work to fit if they will at all.

Do a search on Fatster