I moved my box over 1 3/4" and found a pair of driver side exhaust manifolds that look almost identicle to the 55-56 pass car 265 manifolds-perfect clearance, paid $5.00 for the pair at an antique car swapmeet.I believe they are both dr side 77 chevelle,not possitive on the year though.
Lothar
PS $100,00 for that shaft is a good score.