Mancraft PDIK

[Cannonfodder]

I'm looking at converting my SL8 to hpa and as I'm going to use it as a DMR the mancraft PDIK seems to fit my requirements. From what I've read the V3 gearbox case to hold it needs modifying to fit, so my question is what mods are needed?

All help is appreciated and I'm sure I'll have more questions later