Summit or jegs likely won't be able to give you good torqueflite advice. Powerglide advice .. probably.
Not sure why you'd want to put a non-low band apply VB in your torqueflite. Intended use matters very little when it comes to this as you can roll the sprag in first gear with 500hp or 1000hp, on the street or the track. If it's a 727 you'll explode the stock high gear drum out of the case after a sprag failure. You want the low band on in 1st gear as to provide more sprag protection.
