Looks like the 518 went in with about the same fabrication as a 500. Would you agree with this? I had a line on a rebuilt A500.....Turns out it is an A518. Should I still make the buy? Didn't want to get into crazy floor mods as I have a floor shift/console set up that I want to retain.
I'm pretty sure the A500 and A518 have the very same overdrive unit. The floor massage and crossmember fabrication are done because of this as it has high spots at the casing mounting flange resulting in impacts in those areas.
It takes some work and I found it a little overwhelming at times but relied on threads and info from guys here who've made the swap. Those guys have been a huuuge inspiration to me even when I was questioning myself and my abilities.
If I were thinking about doing it again....I'd do it, however I still have some things left to do before test drive and shakedown. I'm not worried.