By all means you have seen some decent figures 31T but reading over these issues you are to fix it seems like you where in a hurry to get a tune over fix the things that will stand in your way first.
I mean a head stud, spongey converter, i/c pipe to close to heat, vac lines, oil return lines etc.
Wouldnt it be easier to have these issues sorted and running song rather then getting a tune now then fixing all the things that you knew where/could/did fail and go back again?
Iv always stuck with measure twice cut once and dont rush things with cars.
Again thats just MY 2 cents, you will prolly take it the wrong way as most people do over the internet but Im just putting it out there.