Dont bother
Tilt and slide are really only a factory fit as the roof panel is different. Glass tilt and remove can be fitted but are small and inconvenient to use. You can get an external sliding roof but costs megabux and IMHO look crap. Some Pug 205s had them.
More importantly they all create lots of wind noise and thumpy-thump turbulence. IMHO a feature we never needed and are better off without.