I have a 1953 power glide I would like to swap the 235 motor- powerglide and rear housing into the 1940 suburban. where they are both tourque tube will I need to relocate weld spring pearch? Use 40 springs or 53 springs? Is this swap possible? Has it been done? So far I have removed all 53 parts but don't want to dear into 40 untill I know what to do? thanks Bill