Here is a substitute tall manifold for the chaly when running a larger engine than 110.
Fits in most cases, you may have to elongate the mounting holes for a bit more clearance  subject to engine.
Please see photos
Manifold. 26mm. 105mm TALL. 
Kit Includes:
- Manifold 105mm
 - Heat spacer  or Push fit rubber (Option)
 - Gasket Head end & 2 x 10mm spacer
 - Bolts
 
 
Specifications. Manifold:
- 24.5mm Aperture Carb side.
 - 24.5mm Aperture at head end.
 - 105mm height (overall)
 - 45mm fixing to Cylinder head. center to center
 - 48mm Fixing to Carb. Center to center.
 - Straight back
 
 
Specifications. Push fit rubber:
- 35mm Aperture for Carb fitment
 - 27mm Throat
 - 48mm Bolt centers