use 4.5 in both holes on 8dn10 weights, you may need to add a washer to the tip one if you take it out for a long pull and it climbs to 8500+rpm, you want to stay around 8300rpm for 98-99srx.
Use the stock 99 yellow/white/yellow primary spring(no shims), 52/44 rear helix with a green dot yamaha sec spring at 60-70
51/45 helix will also work well, same sec spring setting
the 99 srx has 15.0mm rollers, you can use the 15.6mm rollers and will raise engagement speed and shift rpm some, they actually work better overall,but thats really fine tuning the set up, you can start off with 15.0 and see how you like it.