Hi Tim,
I have the K20A2 fitted in a race chassis (solid rear cross) which I believe is the same on all new chassis. I did a custom fitment on my engine, tilting etc, but if it is the same mount as mine then you are more than welcome to borrow it as the car is currently sat in the garage. Might be able to make the same just a little shorter.
http://www.jonoracing.co.uk/?page_id=188
The last picture in the album shows the bar I believe you are talking about.
Cheers Jono