Are you running Koni Yellows and GC or another brand of coilover? If you run GC, Dropzone, or Tom's coilovers, I may have a solution to remove the OE-compatible spring perch. This adapter will work on all Hondas with these brand (and possibly other) coilovers on Koni yellows (Sports).
Here is a pic:
It slides over the Koni body, in place of the perch, captures the circlip, then the threaded body sits on it. This is similar to the adapter GC provides if you buy their coilover set specifically for Konis. I have verified that Dropzone and Tom's share a similar ID with GC. This adapter is compatible with all 3, and possibly most of the generic sets out there. Material is T6061 Al, I have a prototype set that has been banged around quite a bit on D/FW and local backroads with no issues.
Post if you are interested, if there is enough interested I will launch into production. Price would be between $50 and $75 per set of 4, depending on interest.