Stores Ref Section No's: 22C/1841 - 22C/1842 - 22C/1843 - 22C/1844 (Size dependent)
Info from AP4380, Section 5 (AL 28, June 1961).
The Mk5A Anti-G suit is effectively the same as the Mk4A, just with the inlet hose on the Right hand side.
The other main difference is that the Mk4A suit was issued with a Mk4 quick release fitting on its inlet hose (as per American Anti-G Suits) suitbale for non-PEC aircraft. The Mk5A suit was issued to squadrons without a fitting on the hose end, so that the correct fitting for the aircraft PEC could be installed locally.
These images were found on an ebay advert by seller aerosmithy.
Unfortunately the suit is half inside-out in this image, making them wrongly appear at a glance as a Mk4A with the hose on the Left.