The stock mounting holes for the 65 buckets are indeed sort of close to the trans tunnel. I had to redrill those holes for the passenger side since the 66 seat mounting brackets are not the same as fir 65’s. I am using a power rack from a 68 C Body wagon in the driver’s side. The outer mounting holes were in the same place as the 65’s so I had to drill new inner miunting holes. i used 65 OEM floor support brackets on sll 4 new inner holes
