Those are RWD only unfortunately.
I think at this point I may switch my plan from building the RB30 to building another motor. I have an RB25 bock/head and RB26 crank/rod/pistons. If I build that motor, I can raise the cross member up 1" which helps a ton with ground clearance and then if I modify the knuckle arm at the top I can get more bump without causing the geo to be all whacked.