What's wrong with the guides...if badly scored, have you tried dressing them.
Guides are expensive, and most not interchangable.
Those ones look made to last.
Looks like it is mounted with the rod, and the thrust guide fits over it.
Nothing made today that I've seen is remotely similar, maybe Northfield in USA
Not much aftermarket bandsaw guides can you buy...
Bedford tool and co in UK make some for Elektra Beckum saws...
Axminster make another type of kit
As far as I've seen the only type of horizontally mounted guides is for Wadkin and Italian /Italian styled machines.
i.e ceramic blade guides for Laguna or GL 456 guides which mount much further back
behind the blade about 2 or 3", so not possible.
Not sure if there is much other types to chose from, maybe spares from RP is available?
Sorry can't help you much.
Tom