1) space availability:
http://www.star.bnl.gov/HyperNews-star/protected/get/estar/306.html .

2. hcal
a. cost estimation by oleg:
https://drupal.star.bnl.gov/STAR/system/files/hcal_only.pdf .
b. E864

3. configuration of em calorimater:
a. FMS+Preshower+Postshower.
b. phenix emc.

4. configuration of tracking;
a. silion tracking cost estimation by zhenyu:

https://drupal.star.bnl.gov/STAR/blog/yezhenyu/star-forward-tracking-system-upgrade-proposal-silicon-ministrip-detector .
four disks: 3.8 million USD.

b. GEM tracking cost estimation by Bernd:

https://drupal.star.bnl.gov/STAR/blog/surrow/forward-upgrade-proposal-material-gem-option .
cost: 2.3-2.9 Million depending on how many disks we would like to have.

c. PHENIX-FVTX .