Ditto on the setup, very nice from what you have shown us.
What spring rates are you running in the front and rear, what type of compression/rebound settings are on those struts and are they adjustable..
Laslty I believe the rear 944 utilize 14mm bolts while most coilovers are 1/2 bolts.. At least that is what I have come across during my reading of rear coilovers..
Maybe something like this will help,
http://www.paragon-products.com/product_p/re_mc7000.htm
I have seen something else that is similiar on some 944 site, because some racer, had the same situation, just can't remembe right now.. and my computer at works history gets wiped everyday..
Alex