as per your mods in the sig i would stick to a FRPP or bbk. You could probably pick one up cheap on ebay. And accufab did make a sn95 style TB but discontinued them after a few years. you might be able to find one used but it might be difficult.
Good decision not to do a fox swap. I pretty sure its an internet myth, or placebo to make you think it works. and if it does make a diffrence it could only be minimal and probably unnoticeable. people aren't going to like that i said that because there arepeople on here that swear by it. And they are entitled to their opinion, but thats mine.
everything else is not junk either, accufab does make real nice pieces, but for the money the FRPP, edelbrock, bbk, and Pro Products make quality stuff too.
I am not sure but i am assuming that you are sticking with the stock intake? If you are then you don't need the TB adapter, becasue it is already there.