I've built a few high performance automatic transmissions and racing transmissions the past few decades. I still learn new stuff each week.
Usually I average 325+ trans across my benches a year the past 10 years.
In the future , it may be best to mention B&M and other companies can not use the term shift kit
, they use terms like : shift improver kit, shift recalibration kit .... what ever. I've mentioned this many times on discussion boards
on to the subject at hand:
If you want max performance from the 200-4r trans , for the DIY person i would suggest the TransGo kit 200-4r HD2 kit. A billet aluminum servo known as the "Super Servo" would also be suggested.
Jake has extensive knowledge on this 200-4r trans and can provide additional tips via email or the PM system.