I'm looking for race harnesses that will fit my R53 WITHOUT having to mount them to a bar or elsewhere. Basically clip into the current belt, and back belts. Similar to this product but not as expensive. http://www.soloracer.com/rallye4inmini.html

Any other options out there?

 

I've got one I can sell you cheaply. It's a Corbeau clip in that is very similar to the Schroth that's pictured. Not quite as convenient since they are universal and thus require the installation of eye bolts to be clipped to, but it worked well for autocross in my last car. If you're interested, PM me I'll be happy to get you pics and work with you on a fair price.

 

It would be nice if someone made a belt that used the factor front belt mount eye, snapped onto the two child seat mounts in the back, and then just clipped into the buckle on the front seat.