Pretty sure I posted this somewhere else here but figured it's a good thread to add shock info:

IIRC MC18 shock was 285MM, and I measured 12.5 KG spring
First I was doing a conversion with 1994 CBR600 shock which is about same length and slightly over 13KG spring but it was blown and I gave up after I added cost of parts needed to service it

That's when I looked in to later CBR's

'95-'96 is 289mm while '97-'98 is 287mm so I picked one up from a '98 bike for $50

Used belt sander to shave down top bushing from 28 to 24.5mm and drilled the eye from 10 to 12mm, easy job, total cost $50 and no need for spring swap
Ran remote reservoir hose towards the back and tucked it under back seat