Well, you will be running into the unknown... as far as I understand you are trying to run F/I on your build. If that is the case... the bolts will be seeing spiked pressures, don't think anyone has done it before. Hope it works out for you.
Our engine builds are expensive and studs in comparison to other components are actually cheap. And you should consider the fact that they are running extinct... as all of the parts are dwindling in their supply. That includes the Cometics aswell
(my opinion)
When I was purchasing my studs they were actually out of the shorter ones, and didn't want to do another run unless I had a commitment of a 1k units... I guess with OT and YT contacting them as LEGAL businesses changed their mind.
-Sov