RC10Talk - The Net's Largest Vintage R/C Community

2 bodyposts, 2 clips, cut-down plastic T-strap and a piece of foam. The esc and receiver on either side stop the pack from rotating.

I don't know much about them but it looks rather short wheelbase wise, like it's a buggy chassis. Maybe it's just the angle of the photos though.

Here's a different PSI XXX-T

It appears that the RCTech forum member responsible for PSI kits was 2wdmod. He is still active on that forum if you would like to field him a question regarding your kit.