I recommend a 2450. It's the engine I built for my last two long hood cars and for many customers over the years. Concours and hot rod alike.
No need to modify the case other that standard machine work. Line bore, case savers, oil by-pass mod and some 8mm perimeter studs.
Much like the 2.5 ST long stroke engine (70.4x86.7)
70.4 crank (2.4/2.7) and rods
86 mm pistons and cylinders.
9.5:1 compression
36 mm intake ports
Mod "S" cams (performance valve springs)
40mm Webers or PMO
Stock heaters boxes (Dansk or SSI)
Sport muffler
180 RWHP @ 6450 rpm
Great driveabilty and top end performance
If your Zeniths are not burned up they can be rebuilt. (We do that with performance enhancements, in house)
