Hi James,
EJ 22 into Manx, Beetle, Bus or ?
You can just swing it off the box but the forks will bend, all you need is a kafer bar kit
You can use the standard Subaru engine mounts if you want with the Custom Veedub shortened sump as long as you have something to attach the mounts and crossmember to. Not sure if they still make them but have a look at their gallery Manx with Subaru conversion.
A Manx should have a rear cage I presume ! Weld a cross member across the cage and set up the stock EJ22 mounts on a bracket to take the weight.