There a nice sale running on TORQEN in the next few days that includes forging parts, have a look here:
http://www.350z-uk.com/topic/113188-torqen-12-days-of-sales-25-dec-2016-to-05-jan-2017/ check DAY 8
To get some inspiration of what is required, depending on power levels, have a look on our VQ built packages here:
https://www.torqen.uk/170-forged-engine-packages