I still use my 22" rad but went with a 3 row high density core. I also use a 7 blade solid fan about 1/2" away from the rad. Engine ran in the 170's, and never overheated until I changed to a 175K converter (2x since then). If I can ever find any spare time I'm going to put in an aftermarket trans cooler and separate the trans cooling from the engine cooling. I've also been told that an air conditioning water pump has more flow but I've never checked into that.
Randy