1962 Pioneer 9 keel bolts

[pmnfernando]

Hello to all

I recently bought a 1962 Pioneer 9 which i am refitting
After removing old paint in the bilge i found that the keel bolts are corroded.

I would like to know if anyone has experience with this particular model and if so which is the best way to move forward in order to solve this issue

Kind regards
Pedro

[pmnfernando]

the previous owner pass me this drawing about the keel arrangement
where you can see :
6 x 1 inch main bolts
1 x 3/4 bolt on the leading edge, bolged 45 mm deep
1 x 1/2 bolt on the trailing edge both bolted 45 mm deep
6 x 1/2 bolts , bolted 35 mm deep runing parallel to the main bolts