non abs mate, done reverse fill from the bottom up with a syringe and standard bleeding dozen of times.
Is around £200 ( Best Offer) from Omnia Racing about the lowest price these can be bought for. As far as I can see on Demon Tweeks etc they are around £320 !
Mine are worst than that! As scooby said as long as it doesn't reach the seal line it shouldn't cause a problem
For sure the RCS has a greater affect on a non ABS as there are no gubbins in-between. You're right the ABS ECU decides how much pressure to apply at the calipers given lever pressure, wheel speeds etc but on the ABS the RCS on 20 ratio is rock solid compared to OEM.