just trying to get some of yalls thoughts on where to place the wastegate on this kit its the new precision 66mm wastegate
I agree with where you are talking about placing it. Remember you could plumb it in there and then mount the wastegate nearby where it has room.its got to be right behind the comp cover there on the external radius of the bend just before the collector, its not the most convenient spot looking at your setup though. You would be much better off with twin 44mm gates placed elsewhere than the 66mm gate.
It's pointing up about 10 degrees it's hard to see from pics. Space limitation was an issue like most cars... I have worked on cars with ALOT worse placement and said no way is that gonna work and wasWell the wastegate entry pipe is at 90 degrees to the flow of the exhaust gas, you would want a 60mm+ gate to even try and get away with that kind of wastegate entry. Next time you have the merge off try blowing compressed air down the pipe and check how much air comes out the turbo entry vs how much comes out the wastegate entry. I have seen similar designs actually pull a vacuum on the wastegate inlet pipe which really isnt what you want.
With the collector you have there your best bet is twin gates mounted before the flex bellows that you have there on the external radius the the bend and just make up a block off plate for the gate mount you already have, that is now a good location for an exhaust pressure fitting.