sounds cool Phil, of course D.G. faves Bob of the Pops have covered 5d;

https://boryngbison.bandcamp.com/track/5d-fifth-dimension-jim-mcguinn

and you probably know, 5d was also a 'b' side for Aussie Doug Ashdown in 1968;

https://www.youtube.com/watch?v=YnpsAzP7OhA

Thanks for bringing up Bob Of The Tops[he is from PM city Leicester]up the road from me.
I found his bandcamp page he has some great powerpop covers really enjoyed them especially the Beatles cover of Rain