Looking to make my own 3/4 way coilovers

[zillamania]

this might be the wrong forum but id like to get pointed to the right forum if it isn't

I'm looking to make my own 3 way (prefer 4 way) coil overs for forest stage rally racing.
i know what you're thinking why not just buy some already made. there aren't any currently on the market that would work on my land rover LR2 for this application.

sure I could work with a known company and I am for my main set of coilovers (ceika)

there is a guy local to me that makes custom suspension for Polaris Rangers, I'm wanting to gather enough information and education so i can bounce ideas and measurements back and forth between us to achieve the best possible setup.

so far what I've gathered is that i want to use Bilstein internals. Would it be even possible to convert a Bilstein set from gas to oil cooled? how could i make it where the dampining is adjustable by a key inserted into the top rather than a special bilsein wrench.
also I would like for the strut to in the inverted configuration.

call me crazy but I know what money we're looking at here. $7,000-$12,000 maybe even cheaper if I can use a few off the shelf extremly high quality parts.


thanks for the replies.