Late to the thread but like mentioned 280rwhp is possible thru an auto but no more than that with that combo. I sold my complete 331 stroker pan to intake for $2600 now in an sn95, so deals can be had going used! TFS kits are good, nothing wrong with them. My friend went low 12's in his 94 GT...
I ran stock airbox even with a 331, I track tested 3 different setups and the stock airbox with silencer removed got the best times plus being plastic didn't get as hot. But if after some looks then the BBK/MAC are decent.
That had 275/40 17 drag radials but were OLD and didn't hook well at all. One thing I love about this SVTPP suspension is that it works well all around, kills it in the corners and allows some weight transfer at the track.
As far as I can tell I have the fastest time yet on stock tires, stock...