lets see those merge pipe pics
The Best V8 Stories One Small Block at Time
Nah, if anything, i'd put it closer. but it works great where it is. Holds 8psi steady and is only a 38mm
If it works then it works then there is no reason to change it, but the best placement would be to place the gate right at the 90* bend that goes towards the passenger side with the gate facing towards the back of the vehicle. Placing the wastegate in direct flow of the exhaust will make it work better.
Elementary quality example:

Example post from a wastegate maker.
https://ls1tech.com/forums/10174249-post12.html
A pic:
www.coneeng.com
bought the 3.5" to t6 transition from
www.mandrel-bends.com
they offer t4 transitions too
used this one from columbia river

http://www.mandrel-bends.com/catalog...teel-1008.html
here is what it looks like in a 71 nova. I am pleased












No more thread hijack. 
