BEWARE! You may not be happy with a 700R4 The gear ratio spacing is not the best. First gear is very low compared to other options. The 700R4 shifts from 1st to 2nd and feels like it just shifted from 1st to 3rd. With a 3:73 rear gear I didn't like it at all. I pulled out the 700R4 and gave it away. Replaced it with an Autogear M22W 4speed.
You can change the ratios in a 700R4 or use one from a Corvette that has better ratio spacing.