With the power you are making, front mount is probably the safest. However unless you are thrashing it on hot days all the time a top mount will do the job without too much sacrifice.

I'm around the same power as you with similar setup, if I keep the car much longer I will be swapping back to top mount + waterspray. I just don't see the top end enough to worry about heat soak and the whole point of going twinscroll was for response and bottem end grunt.

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Twin scroll Pig Bi-Squeeling