There were quite a few - perhaps a dozen panniers, for example. The three locos noted above (7780, 7782, 8745), all the Folkestone panniers had the extra lamp irons, but I don't think the latter had the GWR type irons as well. 4666 got an SR pattern battery box for its AWS, too. There were also several - I haven't checked how many - Standard 4 4-6-0s. It's not really a surprise given that they were, by that point, Southern Region engines, but operating in WR sheds (Weymouth), or inheriting their allocations (Yeovil). That said, the 45xx and 4575s on those allocations weren't so treated, so I can only assume that they weren't sent to Eastleigh while the panniers and Std 4s were.
Rail-Online
www.rail-online.co.uk
Here's 75003:
And 75000 (both Yeovil engines, as it happens):
Note that both only had the GW pattern irons in SR positions.
The more you look, the more you get to see.
Adam