Can anyone advise what the probability of shifting the aluminium leaf-spring mounting blocks will be? They appear to be pretty much corroded hard onto the studs? The reason is that I am wanting to make up some brackets to mate up to a towing A-frame that I got cheap. That way when we go on holiday with the motorhome we can tow the little Fiat behind the big Fiat

However, for obvious reasons its all got to be secure so my plan was to remove the alloy blocks and sandwich the fittings underneath. If I reduce the height of the blocks accordingly then I can preserve the ride-height. However, if removing the blocks will be impossible without destroying them (or the studs) then I may need to think again.
Thanks,
Keith