1965 Buick Skylark Convertible----Starter Issue

[schnopz]

My skylark has a 300 C.I. V-8 Engine. Other than the two bolts(easily accessible) that hold one part of the starter in place, there is a supporting bracket where one of the two end bolt attaches the first part of the bracket to the engine block while the other end bolt attaches the second part of the bracket to the top of the starter. It is virtually impossible to gain access to these two bracket bolts in order to remove the starter. Has anyone been faced with this issue and how did they resolved it or is there
a specially designed tool that works in very tight and angular corners.